See here our products:

Rollers and needles

from Maridt company

MARIDT rollers and needles are made of material 1.3505 and have a hardness between 58 and 65 HRC.

Norms and forms for rollers

Besides the standard cylindrical rollers MARIDT can also offer ZB rollers or rollers with special profiles according to customer’s requirements.

Roller tolerances
Grade Diameter Gauge µ Selection groups µ Circularity Tdw µ Roughness µ Length tolerance µ
G2
- 26
+ 6 - 10
2 1,0 0,10 Length up to
< 20 mm + 0,000 - 0,030
26 40
3 1,2 0,15
40 -
3 2,0 0,25
G5
- 26
+ 6 - 10
5 1,2 0,15 Length up to
> 20 mm + 0,000 - 0,050
26 40
5 1,5 0,20
40 -
5 3,0 0,30

Norms and forms for needles

Needles can be supplied with flat ends (norm NRB) or with rounded ends (norm NRA).

Tolerances for needle rollers
Grade Gauge µ Circularity 1) Tdw µ Roughness Ra µ Length tolerance
G2
0 - 2
- 1 - 3
- 2 - 4
1 0,2 according H13 norm
- 3 - 5
- 4 - 6
- 5 - 7
- 6 - 8
- 1 - 3
- 8 - 10
G5
0 - 5
- 3 - 8
- 5 - 10
2,5 0,25
1) The values are to be measured at the middle of the roller’s length.

For special requirements

Rollers with special profiles can be supplied according to customer requirements.

Do you have any questions? We will be happy to advise you.

Phone Phone +49 7144-8078 77

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