HEAVY DUTY IDLE ROLLERS SERIES 309-312-313
For straight and curved roller conveyors handling heavy unit loads.
Steel tube, monolithic structure.
Drop-in or bored and tapped shaft type for assembling on bored side frames.
Precision radial rigid bearings.
In standard execution with 20 mm diameter, M10 attachment shaft, rollers have sealed 2RS bearings, still further covered by a type 1 protection. All other rollers have open bearings and a grade 6 protection (Ermex C6) suitable for demanding environment and open air installations.
For uses that require a particular smooth running, grade 4 protections could be provided instead of Ermex C6.
In case of severe environment we recommend using grade 6 (ErmexC6) protections. also for bored and tapped shaft types.
Rollers are normally supplied with raw steel tube, and greased for normal temperatures (–10°C + 90°C).
The catalogue show the essential technical data and the executions available on request.
Diameters from 60 to 159mm. Rated loads up to 11,000N according to the type, the speed and the length.