Material Handling

Loading and Unloading of Grainery

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PROBLEM STATEMENT

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• Industries that deal with bulk raw material always face a problem in transporting the raw material from one place to another. Therefore, they make use of a conveyor belt system that runs around the entire factory which can easily transport the bulk material.
• The aim of this project is to design a loading unloading system to handle the big grain sacks mostly used in the granaries and agro-manufacturing industries.

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IMAGES FOR REFERENCE

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BLOCK DIAGRAM

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Step 1: Calculating load

Step 2: Calculating speed and motor requirements

Step 3: Designing Drive system

Step 4: Designing conveyor System

Step 6: Designing Frame

Step 5: Tensioning Devices

Case Study

COMPONENTS

5

• Belt Selection
• Roller Design
• Motor Selection

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• Gearbox
• Bearing Selection
• Tensioning Device

DRIVE SYSTEM

• Individual Component
• Motor
• Belt Drive
• Gearbox
• Driving Pulley
• Driven Pulley
• Calculations
• Manufacturing

MOTOR

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MRP (Indian Rupees) - 48970

Motor Poles -4

Output Power kW/ HP -2.2 kW/ 3 HP

Efficiency Class -IE3

Type

General Performance Three Phase Squirrel Cage TEFC Cast Iron Induction Motor

Synchronous speed (rpm) -1500

Rated Voltage (Volts) - 415 Volts (+/- 10%)

Dimensions (LXWXH)in mm -376 mm x 218 mm x 240 mm

Winding - Copper

Body Material/ Housing/ Casing- Cast Iron

Standards - CE, IEC60034-1, Ref:IS12615:2018

Mounting - Foot Mounting (B3)

Frame Size (mm) - 100

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V-BELT DRIVE

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• Individual Components
• Small Pulley
• Big Pulley
• V Belt
• Shaft
• Coupling
• Calculations
• Manufacturing

COUPLING

TOP VIEW

SIDE VIEW

Material - Medium Carbon steel

ASTM A29 1040

SHAFT

Material - Medium carbon Steel

ASTM A29030

A cuboidal Stainless Steel key of dimension 10*5*50 mm will be used.

V BELT

Power to be transmitted : 1.76 kW ~ 2.36 Hp

Therefore, Section A belt will be suitable.

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According to Standard Specifications Belt,

Width : 30 mm (B)

Height : 20 mm (A)

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Number of Belts Req. : 2

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Material:

Rubber Ply

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Cross Section Of V - belt

SMALL PULLEY

FRONT VIEW

SIDE VIEW

Diameter - 90 mm (PCD)

Material - Cast Iron

BIG PULLEY

Diameter - 270 mm (PCD)

Material - Cast Iron

FRONT VIEW

SIDE VIEW

MANUFACTURING

PULLEYS

A V-pulley manufacturing process, comprising the following steps:

• Forming a pulley by integrally forming a cylindrical pulley blank.
• Machining a V-shaped belt groove, cutting the external surface of the pulley blank to form a plurality of V-shaped belt grooves.
• Matching the V belt; fine machining, cutting the external surface of the pulley blank and the side surfaces of the belt grooves, cutting off the machining allowance.
• Shot blasting, placing the pulley in a shot blasting machine to form a rough shot blasting layer on the side surfaces of the belt grooves.

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The pulley manufactured by the above process has a great friction coefficient of the side surfaces of the belt grooves, thus is unlikely to slip, and provides high drive efficiency.

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MANUFACTURING

SHAFT

• Choosing the standard shaft of 28 mm diameter( medium carbon steel).
• Turning the shaft on lathe machine to form stepped shaft.
• Vertical milling on shaft ends to form keyways.
• Hardening and increasing toughness of shaft by heat treatment and quenching.

COUPLING

• Billet of required diameter and height is chosen.
• Turning - During turning the excess material is removed, forming a rough flange.
• Forging - Instead of turning we can also use forging in case of medium carbon steel.
• Drilling - Holes are drilled in the flange as per number of bolts required and their diameters. The shaft hole is also drilled.
• Broaching - To create keyway.

GEARBOX

• Flowchart for designing Gearbox
• Terminologies of worm and worm wheel
• Calculations based on conveyor requirements
• Manufacturing methods
• Materials used
• Calculations required for designing
• Cooling of worm and worm wheel
• Assembly cad model views
• Assembly drawings

GEARBOX

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• Worm
• Worm wheel
• Casing
• Coupling (from worm to rollers )
• Ventilator
• O ring
• Tapered Thrust Roller Bearings
• Bore Seal
• Oil Seal

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Define transmitted power, input and output speed, and calculate gear ratio

Calculation of design torque and Specify number of threads on worm wheel

Calculating required dia and other parameters for Worm

Selection of material for worm and worm wheel

Calculating no. of threads, centre distance and also Specify diametral pitch

Mentioning the pressure angle,module

deciding other worm dimensions like axial pitch,normal circular pitch

Designing both worm and wheel and then casing

Working on Cooling methods of gearbox

Bearing selection ,oil seal, Circlip design

Assembling all parts in 1 model as gearbox

Knowing manufacturing methods for important components

FLOWCHART

GEARBOX: WORM AND WORM WHEEL

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Reduction ratio : 30

Number of starts : Single-start

From design data book : 1/30/10/8 will be the specifications for selecting standard gearbox

Terminologies :

z1/z2/q/m

where,

z1 = number of starts on the worm

z2 = number of teeth on the worm wheel

q = diametral quotient

m = module (mm)

The diametral quotient is given by,

q= d1/m

where d1 is the pitch circle diameter of the worm.

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GEARBOX CALCULATIONS

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Required min rpm approx = 2

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Input rpm given by belt = 480 rpm

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output rpm given to rollers = 16 rpm

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Transmission ratio = 480/30 = 16 :1

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GEARBOX CALCULATIONS

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Step I Centre distance

a= 1/2 m (q + z₂)

= ½ (8)(10+30)= 160 mm

Step II Speed reduction I = z₂ / z_{1 =} 30

Step III Dimensions of worm

d1 = qm = 10(8) = 80 mm

da1 = m(q + 2) = 8 (10 + 2) = 96 mm

tan γ=z/q= 1/10 or γ = 5.71°

df1 = m(q + 2 – 44 cos γ)

= 8[10 + 2 – 4.4 cos(5.71)]= 60.9747 mm

px = pm = p(8) = 25.1327 mm

Step IV Dimensions of worm wheel

d2 = mz₂ = 8 (30) = 240 mm

da2 = m( z2 + 4 cos γ – 2)

= 8 [30 + 4 cos (5.71) – 2]

= 255.8412 mm

df2 = m (z2 – 2 – 0.4 cos γ)

= 8 [30 – 2 – 0.4 cos (5.71)]

= 220.8159

BEARING CATALOGUE

OIL SELECTION

Source - https://www.machinerylubrication.com/Read/926/gear-oils

V : pitch line velocity

n: input rpm = 1440

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d = output shaft dia = 45 mm

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v = 3.14 * 45* 480/60 * 10^3

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v = 1.1309 m/sec

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Temp. in gearbox = maximum is 65℃

So, from the table, ISO VG 680 oil is required.

OIL SELECTION

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Amount of oil required :

Tooth depth(h) = 11 mm

Oil level must be between :- h to 3h

So, according to model and other dimensions,

Volume = (Length of casing) x (breadth of casing) x (height of casing - radius of gear + 2h)

Volume = (190) x (104) x [213.5 – 80 + (2 x 11)]

Volume = 3726800 mm³

Volume = 3.7 ltr

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So, approximately 3.7 Litre of gear oil is required for smooth functioning of this gearbox.

Manufacturing of Worm & Worm wheel gearbox

• Worm gears are typically manufactured by hobbing with a hob or cutting tool.

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• The worm may be turned, hobbed, milled, or ground. Gashing can also be used.

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• In horizontal milling machine the blank is pressed on to a tapered mandrel and it is held in dividing head with (lathe) dog which allows for the indexing process There is involute cutter which cuts or makes teeth profile on gear.

For ease of machining of shafts the materials are used especially low carbon alloy steel .

After turning process on lathe or CNC the shaft with required steps , chamfer and fillet is manufactured.

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Each metal hardening process includes three main steps :

heating,soaking and cooling the metal.

Some common types of hardening include strain hardening, solid solution strengthening, precipitation hardening, and quenching .

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Manufacturing of Worm & Worm wheel gearbox

Other methods to harden the shafts :

• Carburizing
• Nitriding
• Cyaniding
• Carbonitriding

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• CASING Manufacturing : Cast iron is one of the most free-machining ferrous materials. Reliable microstructure, is the key to optimum iron machined castings because cast iron shows vast machining tendencies related to composition and microstructure.

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• Gray cast Iron is the material we have used for our casing .

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• Casting is a forming process which is also used to create gear blanks (that are then machined) and full gears with cast teeth profiles.

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Manufacturing of Worm & Worm wheel gearbox

1. Gear generation methods use cutting tools in the shape of the desired gear profile to create the gear (rack cutters, gear shaping, and gear hobbing).
2. Gear forming processes create gears without using cutting tools (rolling, casting, powder metallurgy, 3D printing).
3. Gear form cutting involves tools that are used to create the gear profile (gear milling, shaping, slotting, planing, and EDM).

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Gear shaping

Gear Hobbing

Manufacturing of Worm & Worm wheel gearbox

• Gear form cutting When shaping, the workpiece is fixed and the tool on the ram is moved back and forth across the workpiece.

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• When planing, the tool is fixed and the workpiece travels on the table back and forth under the tool.

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• When slotting, the workpiece is held stationary and the tool on the ram is moved up and down across the workpiece.

Gear Form Cutting

Milling

Gear Forming

Rolling is one of the oldest forming processes. It forms the gear through hot or cold rolling a blank workpiece through two or three dies .

MATERIALS USED

• The threads of the worm are subjected to fluctuating stresses and the number of stress cycles are fairly large. Therefore, the surface endurance strength is an important criterion in the selection of the worm material.

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• The core of the worm should be kept ductile and tough to ensure maximum energy absorption.

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• The worms are, therefore, made of case hardened steel with a surface hardness of 60 HRC .

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• The magnitude of contact stresses on the worm wheel teeth is the same as that on the worm threads.

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• The worm wheel material should be soft and conformable. Phosphor-bronze, with a surface hardness of 90–120 BHN, is widely used for the worm wheel.

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• Phosphor-bronze worm wheels are sand-cast, sand-cast and chilled, or centrifugally cast.

It is better that the outer rim is made of phosphor-bronze & bolted to the cast iron wheel. There are two reasons for using ‘dissimilar’ or ‘heterogeneous’ materials for worms and worm wheels :

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(i) The coefficient of friction is reduced.

(ii) The conformability of worm wheel with respect to the worm is improved.

Cooling of Gearbox

Reducing the temperature of a gearbox by any means will alleviate lubrication problems and avoid hot scoring.

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The most effective cooling methods are :

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• duty cycle

reduction

• heat sinks
• air cooling
• water cooling

Views Of Cad Model

FRONT VIEW

ISO VIEW

Views Of Cad Model

INTERNAL VIEW

Drawings of worm & worm wheel

Drawings of worm & worm wheel

ISOMETRIC VIEW OF WORM

Drawings of worm & worm wheel

Drive and Driven Pulleys

Drive and Driven Pulleys

Contents:-

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1. Drawing
1. Drive Pulley
2. Driven Pulley

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• Pulley and Belt Specifications

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• Pulley and Shaft Calculations

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• Manufacturing Process
• Pulley Drum
• Shaft
• Tolerances and Fits
• Bearings

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Drive and Driven Pulleys

Drawing:-

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Contents

Drive and Driven Pulleys

Drawing:-

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Contents

Contents

Drive and Driven Pulleys

Pulley Specifications:-

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1. Material - Mild Steel

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• Pulley Width:- 1100mm

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• Pulley Radius:- 225mm

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• Pulley speed:- 17.2 RPM

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• Angle Of Wrap :- 210°

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Belt Specifications:-

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1. Belt Width:- 1000mm

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• Belt Length:- 25m (standard)

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• Belt Weight:- 9 Kg/m

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• Material:- Rubber Ply

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Contents

Contents

Drive and Driven Pulleys

Shaft and Pulley Calculations:-

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1. Calculating Belt Tensions:-
1. Belt Friction: 0.3

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• V_belt = 0.405 m/s

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• 𝜶 = 210°

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• Motor Power = 1.98 kW considering 10% losses

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Contents

2. P₁ and P₂ are given as:-

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(P₁- P₂ )v = Power, and

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P₁/P₂ = e^µ𝜶

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Therefore, P₁ =7333.5 N

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P₂ = 2444.5 N

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Contents

Drive and Driven Pulleys

Shaft and Pulley Calculations:-

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2. Shaft Calculations:-

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• For Drive Pulley Considering both Bending as well as Torsional moments.

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• M_b = ( P₁ - P₂ ) x R

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= 1100025 N-mm.

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• M_t = 1099279.25 N-mm

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After Substituting the values :-

𝝉_max = 55.5 N/mm² ( Considering fs = 2.5 and

𝝉_max = 0.3 (S_yt)) .

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d = 55mm

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similarly for Driven Pulley

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d= 55.5mm

Contents

Contents

Drive and Driven Pulleys

Manufacturing Process:-

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1. Pulley Drum

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• The conveyor pulley shells are one-piece rolled with a single seam weld. The fabrication is accurate in concentricity. All of the shells are static balanced and can be dynamic balanced if required.

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• All conveyor pulley shells are seam welded by MIG process.

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• Continuous wire feeds are employed during the welding process, utilizing an inert gas atmosphere, which guarantees the maximum uniformity and resistance of weld.

Contents

Drive and Driven Pulleys

End Discs and Locking Mechanisms :-

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• The end-disks can be made of cold rolled plate, casting, forging, machined plate or fabricated pieces. The turbine shape reduces the disk stiffness while optimizing the distribution of end-disk bending stresses.

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• XT 30 bushings are used and connected to the hub of the discs which provide locking mechanisms for the shaft.

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• The bushings used in our design is manufactured by Superior®.

Contents

Contents

Drive and Driven Pulleys

Belt Tracking Techniques:-

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1. Crowned Pulleys:-
1. Fabric belt conveyors are normally equipped with at least one, sometimes with several pulleys with cylindrical conical or radially crowned form.

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• This basic measure is usually sufficient to achieve straight and stable running. Pulleys with this shape exert a self-tracking effect.

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• If there is a variable run-off tendency, or a reversal in running direction, the belt is centered without the need to adjust the axis.

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Cylindrical-conical Shape

Contents

Contents

Drive and Driven Pulleys

Belt Tracking Techniques:-

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2. Belt Lagging:-

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• The contact surface of most lagged pulleys can be modified from a rough ground finish to include several types of groove patterns. These groove patterns assist the conveyor pulley in dispersing or eliminating water and debris away from the center of the pulley, resulting in increased traction and enhanced belt tracking characteristics.

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• The Lagging used in our design is a herringbone type lagging with a thickness of 5mm.

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Contents

Contents

Drive and Driven Pulleys

Shaft Manufacturing:-

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Step 1: Procurement of Raw materials (3m long Forged)

Step 2: Cutting the shaft (Band-Saw)

Step 3: Shaping of the shaft (Turning)

Step 4: Hardening (Carburizing and Quenching)

Step 5: Grinding to give it a smooth finish

Contents

Contents

Drive and Driven Pulleys

Shaft Manufacturing:-

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Step 1: Procurement of Raw material from a seller. 3m long forged shaft 100mm Diameter. ( Low Carbon Steel (MS))

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Step 2: Cutting the shaft raw material with the help of a band-saw to a little more than the required length.

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Step 3: Boring a hole to maintain the centreline of the shaft.

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Step 4: Turning the shaft on the lathe to produce the required dimensions with the necessary steps to create a stepped shaft.

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Band Saw

Contents

Contents

Drive and Driven Pulleys

Shaft Manufacturing:-

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Step 5: Hardening

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• Carburizing is a heat treatment process to harden the surface of low carbon steel. The surface on which carbon is present and penetrated the surface gets specially hardened.

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• Carburizing is followed by Quenching which is rapid cooling of the steel after heating it at high temperatures. It is done to adjust the hardness of steel. After quenching tempering must be done to give the toughness back to steel which might have become brittle.

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Carburizing plant

Contents

Contents

Drive and Driven Pulleys

Fitting:-

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Fits:- The shaft will be press fit inside the drum pulley through the end disc hubs and locked using XT 30 bushings from Superior.

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Tolerances:-

The tolerance grade for transmission shafts at low speeds is preferably taken as H8 considering Hole basis system.

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Upper Limit :- + 46 µm

Lower limit :- 0 µm (since shafts and holes are considered as unilateral systems).

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Shaft Fitting and Tolerances

Contents

Contents

ROLLERS AND IDLERS

Rollers and Idlers

CONTENT

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1. Roller Components
2. Roller Assembly Drawing
3. Calculations
4. Idler Assembly Drawing
5. Idler Selection
6. Manufacturing Process
7. Maintenance

Roller Components

Components of a Roller: -

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Roller Assembly

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1. Outer Cylindrical tube
2. Bearing Housing/ End Cups
3. Bearings
4. Snap Ring
5. Stepped Shaft
6. Labyrinth type seals
7. Shaft End Bracket on Conveyor Frame

Roller / Idler Brackets

Bearing Specifications and Seal

Bearings: -

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1. Type of Bearing :

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Deep Groove Ball Bearing

Size : 6006z

Make: SKF

Material:Chrome Steel

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• Labyrinth Seal: -

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• Labyrinth seals are a non-contact seal that makes a tougher path for contaminants to enter while operating with little or no friction.
• Labyrinth Seal Covers

CAD model - 6006z Bearing

Snap Rings , Bearing Housing Cups , Brackets

1. Snap Rings
1. Specifications: -
2. ID = 25.7mm
3. Max Opening = 3mm
4. Thickness = 2mm

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• Bearing Housing Cups
• ID = 55mm
• OD = 65mm
• Material - Grey Cast Iron
• Thickness - 1.5mm
• Make - Rajdeep industries

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• Brackets for Shaft Ends

Universal Shaft Brackets

Material = Mild Steel

SNUG FIT - H8

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Stepped Shaft , Outer Cylindrical Tube

Stepped Shaft

1. Solid Ends

Diameter= 28mm

Steps = 3 steps

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• Hollow Tube

Hollow Tube OD =43mm

Hollow Tube ID = 40mm

Material = Mild Steel

Welding - 3mm Metal Sheet with 28mm Hole

Weld with Outer Hollow tube,

Weld with solid ends

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Outer Cylindrical Tube

Pipe Material - Stainless Steel

Pipe Diameter = 65mm

Thickness = 4mm

Make = Jemkin Industries Ahmedabad

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ROLLER ASSEMBLY DRAWING

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ROLLERS Calculations

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SELECTION OF ROLLERS: -

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Total Length of the Belt = 10m

Length on 1 grain sack = 112 cm = 1120mm

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3 rollers Stability of 1 grain sack

Hence, Roller pitch = 373mm

Assuming Factor of Safety,

Roller Pitch = 350 mm

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No of Rollers per sack length = 3

Weight distribution : Load per roller = 12.5kg

= Approx 125 N per roller.

[Safe]

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ROLLER SPECIFICATIONS : -

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Roller Diameter = 65 mm

Roller Length = 1050 mm

Roller Material = Mild Steel / Stainless Steel

Maximum Loading Capacity of 1 roller = 500 N

Total number of Rollers Required = 26

Calculations for roller

EXCEL SHEET LINK

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Peripheral run-out

Peripheral run-out is not to exceed 0.6mm total indicator reading on trough idlers, with proportionately Low values for return and other idlers.

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Idlers Assembly

IDLERS Selection

IDLERS SELECTION: -

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Idler Specifications

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OD = 50 mm

ID = 15 mm

Bearing specification - 6202z SKF Ball bearing

Top Hanging Brackets

Material = SS

Length = 1050 mm

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Manufacturing Process in depth

Band Saw Cutting Machine

Straightening

Turning

Pipe Manufacturing

Grinding

INSPECTION

Manufacturing Process Continued

Shaft Stepping on Lathe

Milling the shaft ends

Welding- Bearing housing + Outer Tube

Roller/Idler Manufacturing Process:

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PIPE MANUFACTURING

Pipe Turning

Grinding

Maintenance for Rollers and Idlers

• Seals

Seals should be multi labyrinth "non-rubbing" type to prevent ingress of dirt, air and moisture. The outer seal should be corrosion resistant.

• Bearings

All idler rollers should be fitted with precision ball or spherical roller bearings, shafts and housings machined to standard I.S.O. limits. One idler bearing shall be positively locked to the shaft and the other free to float.

• Shafts

Stationery shafts should be used and should be of such dimensions that the vital clearance dimensions at the seal are maintained.

• Greasing

Bearing and seal assemblies must be factory greased and contain not less than 1 cubic inch of grease for bearing lubrication, i.e.: Sufficient to continually operate idlers for a minimum of six years without attention. Sealed off regressing facilities can be provided.

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Index

Tensioning Devices

• Assembly Description

+ Parts

+ Working

• General Specifications
• Drawings or CADs
• Calculations
• Manufacturing & Maintenance

+ Materials

+ Manufacturing of Bearing

-Manufacturing of Outer & Inner Ring

- Manufacturing of Bearing Balls

-Manufacturing of Bearing Retainers

+ Assembly Process

• Maintenance

+ Proper Mounting & Lubrication

+ Bearing Failure-Causes & Cures

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Assembly Description :

Tensioning Devices Used In Conveyor Systems

Types Of Belt Conveyor Take-Ups

1. Screw Take Up

2. Gravity Take Up

3. Horizontal Take Up

https://feeco.com/choosing-between-take-up-options-for-belt-conveyors/

⚫ Index

CPT – Suitable to a wide variety of applications. The location of the threaded rod, in the center of the frame and bearing, helps to ensure tensioning during operation.

1.Take-up Frame

4.Adjusting Screw

3.Take-up Bearing

2.Bearing Housing

1.

2.

3.

4.

• The tension on the belt is accomplished by turning the screw at the end of a conveyor.
• This pushes the bearing block towards the end of the conveyor, which adds tension to the belt.
• There is another, identical jack-screw located on the opposite side of the roller.
• The same procedure must be performed evenly for both Take up units.

WORKING :

Parts

⚫ Index

1.

2.

3.

4.

Specifications -

Purpose specific: For material handling applications

⚫ Index

Take Up Frame :

Take up Assembly

CAD & Drawings

Take Up Ball Bearing

⚫ Index

N 5

0.01

1. Take-up housing
2. Grease fitting
3. Ball bearing
4. Piloting groove
5. Recess for end cover
6. Receiving Opening for adjustment screw location
7. Centre bore for adjustment screw
8. Filling slot for bearing

⚫ Index

Manufacturing & Maintenance -

Components :

2 bearing rings(or races)

Balls

Retainer

Additional components

Seals, shields

Materials

• The most common material used for bearing races is SAE 52100 steel. SAE 52100 is a chrome steel (1% carbon, 1.5% chrome alloy) and is dimensionally stable to 250 degrees F or greater.
• Another popular material is AISI 440C stainless steel, used because of its anti-corrosive properties. AISI 440C is more expensive to machine than 52100 and cannot take as large a load.
• AISI M50 steel is used in critical life support system applications, such as the aircraft industry.
• Bearing balls are also most commonly manufactured from AISI 52100 steel. Other bearing ball materials include AISI 440C stainless, as well as other stainless materials, ceramic, glass and even plastic.
• Bearing retainers, also referred to as cages or separators, are manufactured from a variety of materials, including stamped steel, stamped brass, machined steel, machined bronze, molded nylon or Acetal (POM), and phenolic.

⚫ Index

Manufacturing Process:

https://www.skf.com/in/products/rolling-bearings/principles-of-rolling-bearing-selection/bearing-selection-process/sealing-mounting-and-dismounting/mounting-and-dismounting

Tube Stock

Lathe / Screw Machine

Stamping

Hardening

Heating

Quenching

Tempering

Grinding Machine

• https://insights.globalspec.com/article/4523/how-ball-bearings-are-manufactured

Face Grinding

OD Grinding

Race Grinding

Honing

The manufacturing process used to manufacture a ball bearing's inner and outer rings is almost identical.

Bearing Ring

⚫ Index

Manufacturing of Bearing Balls

Manufacturing of Bearing Retainers

Wire / Rod Slug

Cold Heading Process

Filing /

Tumbling

Soft Grinding

Hardening

Process

Finish Grinding

Lapping

• Bearing retainers are manufactured through a number of different processes, depending on the material and size. Manufacturing processes include stamping and forming, molding, forging and machining.

⚫ Index

Assembly Process

9. Cleaning 10. Anti-rust Treatment

11. Packaging 12.WareHouse Storage / Shipping

⚫ Index

Maintenance

MOUNTING OF BEARING

• The inner race of the bearing is fitted on the shaft by means of

an interference fit.

• The outer race is also mounted in the housing with interference fit, but to a lesser degree of tightness than that of the inner race.Insufficient tightness of the outer race in the housing seat may cause ‘creep’.
• Preloading the ball bearings
• The precautions to be taken during the mounting operation -
• Mounting should be carried out in a dust free and dry environment.
• Before assembly, the shaft and the housing bore should be inspected.
• The rust-inhibiting compound on the bearing should not be wiped except on the outer diameter and bore surface.

Lubrication :

Oil

Grease

• To Dissipate Frictional Heat
• To Reduce Friction

• simple housing design
• less maintenance cost
• better sealing against rust
• less possibility of leakage

Guidelines For Selecting :

• Temperature < 100℃ - Grease
• Otherwise Lubricating Oils
• Grease- Suitable for low & Moderate Loads, Oil- Heavy Duty Applications

Lubricant Used :Grease VT 307

⚫ Index

BEARING FAILURE—CAUSES AND CURES

⚫ Index

Conveyor Assembly Frame

Side view of frame incline

Plummer block for Roller

and pulley

C section steel pipe

for frame structure

Welding process is to be used for

joining the frame structure

Thank You

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