Bearings

A number of different bearings are available for many Interroll conveyor rollers. The following section only describes the precision ball bearings used by Interroll.

All of the precision ball bearings, with the exception of type 689, are manufactured in 2RZ:
The steel sealing discs form a narrow sealing gap and make no contact, thus ensuring that the rollers start up perfectly. The steel-reinforced rubber sealing lips (NBR) lie against the inner ring under external pressure and thus provide an exceptional sealing quality comparable to the 2RS version.
The oil-lubricated version is characterised by its easy start and exceptional easy-running properties.

DIN 625-Compliant Precision Ball Bearings

•Series 60 and 62 standard DIN grooved ball bearings

•Excellent load capacity and operational life

•Precision ball race

•Extremely temperature-resistant

•Low-noise operation

All precision ball bearings are specified by Interroll beyond the requirements of DIN 625 for optimum, durable and absolutely constant operation. Interroll specifies the bearing play, lubrication and sealing etc.

Precision ball bearings, lubricated (6002 2RZ, 6003 2RZ, 6204 2RZ, 6205 2RZ, 689 2Z)
Material Rings and balls are made of stainless steel of material grade 100Cr6
Hardness: 61 ± 2 HRC, with metal cages
Bearing play C3
2RZ Seal Non-grinding 2-lip seal with labyrinth effect manufactured from steel-reinforced
acrylonitrile-butadiene rubber (NBR)
2Z Seal Non-grinding cover discs made of sheet steel
Lubrication Multi-grade grease, silicon-free
Temperature range -30 °C to +177 °C

Precision ball bearing, lubricated (6002 2RZ)
Material Rings and balls are made of stainless steel of material grade 100Cr6
Hardness: 61 ± 2 HRC, with metal cages
Bearing play C3
2RZ Seal Non-grinding 2-lip seal with labyrinth effect manufactured from steel-reinforced
acrylonitrile-butadiene rubber (NBR)
Lubrication Multi-grade oil, silicon-free
Temperature range -30 °C to +80 °C

DIN 625-Compliant Precision Stainless Steel Ball Bearings

• Design and load capacity as per the DIN 625-compliant precision ball bearings

• Manufactured throughout from corrosion-proof material

• Type 6002 2RZ always available

Precision ball bearings made of stainless steel (6002 2RZ)
Material Rings and ball made of stainless steel, material 1.4125 (X105CrMo17), with a
material grade to comply with AISI 440C
Hardness: 56 ± 2 HRC, with polyamide cages
Bearing play C3
2RZ Seal Non-grinding 2-lip seal with labyrinth effect manufactured from steel-reinforced
acrylonitrile-butadiene rubber (NBR)
Lubrication Multi-grade grease, silicon-free
Temperature range -30 °C to +177 °C