High-quality conveyor rollers

Parameters

Target values

Dimensional accuracy

Acc. to DIN 22112 and DIN 15207

Axial displaceability (axial play)

Acc. to DIN 22112-2. 
If the axial play is too small, the conveyor roller will wear prematurely and may even jam. 
If the axial play is too large, collisions may occur, e.g. with the supporting steel structures.

Bearing clearance and tolerance class of the bearings

For deep groove ball bearings: C4 and P0 acc. to DIN 22112-2

Cage

For deep groove ball bearings: plastic cage acc. to DIN 22112-2

Bearing seat fits

Acc. to DIN 22112-2

Bearing seals

We use Z-shields on both sides.

Push-out resistance

>12kN (acc. to DIN 22112-2)

Runout 
(Total Indicated Runout)

Max. permissible tolerances acc. to DIN 22112-2. The strictest requirement is the equivalent of 0.8mm/m.
Depending on the design, our rollers comply with 0.7mm/m to ≤0.2mm/m. This means we always meet the requirements of DIN 22112-2.

Tightness 
(effectiveness of the seals)

Our seals surpass the requirements of DIN 22112-3 and all other standards.

Lubrication 
(grease properties and grease quantity)

50 - 60% of the free bearing volume must be filled with lithium-saponified grease.

Running resistance (running friction force) - during start-up and operation

It should be as low as possible, as it has a direct influence on wear of the idler rollers and the belt as well as on the energy consumption of the conveyor. For bearings up to 6306, see DIN 22112-2. It depends on the diameter of the roller and the bearing size. A value of 10N must not be exceeded under any circumstances.

Balancing quality

Depending on the design, our conveyor rollers have balancing quality classes acc. to ISO 1940 of at least ≤G40 at belt speeds of up to 3m/s to ≤G14 at belt speeds of up to 10m/s.

Compliance with the max. permissible bearing misalignment*

Under full load, the bearing misalignment for deep groove ball bearings should not exceed 10 arc minutes (see DIN 22112-2). For spherical roller bearings, up to 2° is permissible.

Calculated bearing service life*

We recommend L10 > 60,000h.

Noise emissions

If relevant, the maximum sound power level of the conveyor rollers must also be taken into account (see "TA Lärm").
No special measures are required only for operation exclusively during the day at a distance of >1km from residential areas - standard rollers can be used.

With our noise-reduced conveyor rollers, we achieve a reduction in the sound power level of approx. 20 dB(A).