Types Of Rollers Based On Rolls Tube Materials, Tubes Surface Finish, Drive
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Roller Conveyors Are Used To Convey Products With Hard & Flat Bottoms Eg. Cardboard Boxes, Cartons, Plastic Boxes-Crates-Trays, Metal Trays-Bins, Wooden Pallets, Etc. Roller Conveyor Not Suited Products To Convey Products With Soft / Irregular Bottoms Eg Soft Boxes, Bags, Etc. Generally, Goods Needs To Be Supported On A Minimum Of 3 Rollers At Any Moment, Some Products May Require A Closer Pitch.
The Rollers Tube Size, Tube Matl, Shaft (Spindle) Matl Size, End Mounting, Bearings & Its Seals Are Critical For Smooth Long Life Reliable Operations. Increased Tube Thicknesses Increases Impact Resistance To Denting But Has Less Influence On Load Carrying Capacity. |
| Galvanized Steel Rollers |
Plastic Rollers
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Stainless Steel Rollers |
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| For Moving Goods With Loads ≤ 400 Kg/Roller Manually Or By Gravity. Tube, Bearing, Seal Selection Depends On Load Weight. Supplied As Galvanized/Standard Self Colour Finish |
For Loads 14 & 20 Kg/Roller. Uses High Impact Rigid Self Coloured PVC Tubes Sizes 40 x 2.3 mm, 50 x 2.8 mm. Used Where Goods Are Washed On Conveyors – High Humidity Areas As Low Cost Alternative To S.S. Rollers. Grooved Plastic Rollers- Grooves In Plastic Rollers Could Wear Through. If In Doubt Steel Rollers Should Be Used. |
For Loads ≤100 Kg/Roller For Gravity / Powered Uses. Tube Sizes 50 x 1.5 mm. 303/ 316 Grades S. S. S, Tubes & S. S. Spindles. Used Where Goods Are Washed On Conveyors – High Humidity Example Food Industry. |
| Grooved Rollers |
Tapered (Conical) Rollers |
Sprocketed Rollers |
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| For Use In Either Line Shaft Or 24v DC Motorised Roller Conveyors. Single Or Multi Grooved To Suit Varying Ø Round Drive Belts, Material, Tension, Roller To Roller Lineshaft Centres And Ambient Conditions. Rollers Available Plastic, Galvanized Iron Steel And Stainless Steel. |
Used For Powered / Gravity Conveyor Bends With An Inside Radius Of 800mm To 1000mm. Available With Either 38mm Or 50mm Base Rollers. Rollers Have A Black Plastic Tapered Sleeve To Ensure Correct Product Orientation. Supplied Galvanized/Standard Self Colour Or Stainless Steel Finish. |
For 200 to 400 Kg/Rollers Pallet Or Heavy Loads. Tube Sizes 50 x 2 mm, 60 x 2 mm, 80 x 2 mm, 88.9 x 2.9mm. Single Sprockets For Tangential Drives, Double Sprockets For Roller To Roller Drives. Sprockets Can Be Welded To Outside Of Tubes Or Fitted Outboard Via A Turned Steel Welded Insert. Supplied Either Galvanized/Self Colour Finish.
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| Drum Rollers |
Rubber Coated Steel Rollers |
Steel Rollers Poly V |
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| Large Dia. Thick Walled Tube Sizes 114.3 x 6.3 mm, 168.3 x 8 mm, 219.1 x 8.8 mm. For Use On Belt Conveyors As Idler/ Driven Rollers. O. D. Can Be Machined Parallel Or Crowned To Aid Belt Tracking. Range Of Machined Shaft Ends Available. Supplied With Either Fully Sealed Cartridge Bearings Or With Seam Welded End Plates And Shafts. Supplied Self Colour As Standard. |
All 50mm Steel Rollers Can Be Offered With Option Of Rubber Or Polyurethane Coating. PVC Sleeve Improves Grip, Increases Friction, Protects Goods Bottom Surface, Reduces Noise Has Shorter Lead Time And Is More Cost Effective Than Lagging. |
50mm And 60mm Rollers Fitted With A Plastic ‘Poly V’ Drive Insert. The Rollers Are Driven By A ‘Multi V’ Drive Band. |
| Motorized Rollers |
Lagged Rollers |
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| 50mm 24v DC’ Brushless Motorised Rollers Are Used In Zero Line Pressure Conveyor Applications. Rollers Can Be Supplied With Additional Control Cards. |
Drive Drums Can Be Supplied Rubber Lagging By Urethane Sleeve To Provide Additional Grip To Improve Conveying Efficiency, Eliminates Slips In Acceleration, Small Inclines, Reduces Scratches On Conveyed Goods, Reduces Conveying Noise. |
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Mounting Dimensions Terms For Rollers On Conveyor Frames
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BF Between FramesFrame Inner Width. Key Factor In Selecting Roller Length.
Rollers Are Specified By:-
Conveyor Type- Non-Driven (Gravity/ Idler) Conveyor/ Driven Conveyor/ Accumulating Conveyors.
Roller Tube Material (GI/ S.S./ Al/ PVC), Ø (38 x 1.2, 48.6 x 1.5, 50 x 1.5, 50 x 2, 60 x 2 mm), Surface (Plain, PVC Coated).
Roller Shaft Material (M.S. GI, S.S. Al,), Ø (8, 12, 15, 20 mm), Surface Treatment, Installation Spring Loaded/ Internal Threading.
Roller Type Non-Driven / Driven, Number Of Grooves/ Poly-V, etc
Bearing-Bearing Seal –RZ, Greased Green / Black End Cap, Oil/Grease Combo (Light Running), S. S. Green Cap, Non Precision Oiled Zinc Plated, Non Precision Greased Zinc Plated, Stamped Bearings
Shaft Length – Standard Length / Non-Standard Length
Type Of Roller One Groove , Two Grooves; Poly-V; Poly-O, One-Sprocket, Two-Sprockets, Welded Sprockets, Tapered No Driven, Tapered One-Groove, Tapered Two-Groove, Tapered Poly-V |
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1 Inside Frame Width
2 Over Bearing Projection
3 Face Width
4 Groove Position
5 Lineshaft To Roller Centre
6 Tube Ø
7 Spindle Ø Or A/F
General Notes
• Over Bearing Projection (2) Is Typically 4mm Less Than The Inside Frame Width (1).
• Grooves In Plastic Rollers Will Eventually Wear Through, If In Doubt Steel Rollers Should Be Fitted.
• The Majority Of Steel Rollers Are Supplied With Zinc Plated Tubes.
• Greased Precision Bearings Are Used For Powered Applications And Oiled Precision Or Semi-Precision Bearings Are Used For Gravity Applications.
• 20mm Is The Closest Groove Position Achievable On 40mm / 50mm Diameter Rollers (Dimension Taken From Over Bearing Projection Or From Groove Centre To Centre). |
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| End Caps For Rollers |
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