Composite Rollers
For heavy loads but light-weight and safe for people and belts!
Our roller design features are the result of over a decade of experience with composite rollers. Lorbrand uses purpose made laboratory grade equipment to check for satisfactory operating parameters and measurements like:
- High accuracy of all components, especially bearing seats and
roller TIR’s - Roller dynamic balance.
- Load performance and deflection of components under load.
- Roller running friction.
- Running temperatures and structural strength under elevated
loads and speed.
Roller body construction makes use of high tech glass-fibre reinforced engineering grade nylon bearing housings pressed and locked into landings machined into thick-walled glass-fibre reinforced HDPE conveyor tube.
Key Aspects
- Diameters – 127—219mm
- Lighter than all other roller types
- Noise – Less than all other roller types
- Bearing Sizes – 6305- 2RS to 6312- 2RS
- Material Specifications – High strength, heat resistant, glass reinforced nylon66 bearing housings and, wear resistant, glass reinforced HDPE shells
Please contact Lorbrand for information on our full product range.
| SERIES | DIAMETER (mm) | NOMINAL SHAFT DIAMETER (mm) | BEARING PART NO. | MIN BEARING DYNAMIC LOAD RATING (N) |
|---|---|---|---|---|
| 27 | 127 | 25 | 6305-2RS | 22,500 |
| 133 | ||||
| 152 | ||||
| 159 | ||||
| 32 | 127 | 30 | 6306-2RS | 29,100 |
| 133 | ||||
| 152 | ||||
| 159 | ||||
| 178 | ||||
| 35 | 152 | 35 | 6307-2RS | 33,200 |
| 159 | ||||
| 178 | ||||
| 40 | 152 | 40 | 6308-2RS | 41,000 |
| 159 | ||||
| 178 | ||||
| 193 | ||||
| 203 | ||||
| 219 | ||||
| 45 | 178 | 45 | 6309-2RS | 52,700 |
| 193 | ||||
| 203 | ||||
| 219 | ||||
| 50 | 178 | 50 | 6310-2RS | 61,800 |
| 193 | ||||
| 203 | ||||
| 219 | ||||
| 60 | 193 | 60 | 6312-2RS | 81,900 |
| 203 | ||||
| 219 |
Deep groove double sealed or shielded bearings, of tolerance class C3 and C4, are used. This allows for a larger amount of angular misalignment at the bearing than other bearing designs and classes.
Shell Assembly
Thick-walled glass-fibre reinforced HDPE tube with long, simultaneously machined housing landings ensure a high accuracy fit and high strength construction. Available also with flame retardant formulation (UL94 (V-0)).
Steel Shaft
Manufactured from steel which complies with the requirements for grade 070 M20 of BS 970-1. Shaft diameter tolerance adheres to bearing manufacturer standards and ensures a js6 fit. Shaft end slots are machined to customer standards.
Hollow Shaft on request
Stepped lightweight hollow steel shafts, equivalent in strength and rigidity to solid shafts, are available on request.
Bearing Housing
Manufactured from high-grade fibre-filled nylon66 engineering thermoplastic, heat stabilised for long term use at high temperatures. Flame retardant version version complying to UL94 (V-0) classification also available.
Corrosion Protection
An external coat of TECTYL is applied to shaft-ends only.
Circular Movement Tolerance (TIR)
TIR does not exceed 0,3mm measured at a distance of 25mm from the roller end face. Actual TIR values are less and can be verified by referencing historical data.
| ROLLER FACE LENGTH (MM) | TIR |
|---|---|
| ALL DIA’S | |
| Up to 536 | 0.3 |
| 586 to 965 | 0.4 |
| 994 to 1 450 | 0.4 |
| 1 602 to 2 518 | 0.4 |
