Rollers and needle rollers

from Maridt company

MARIDT rollers and needle rollers are made of Material 1.3505 and have a hardness between HRC 58 – 65.

Roller sizes

We can supply you with standard diameters
or according to customer drawings.

Needle roller sizes

We can also supply you with standard diameters
or according to customer drawings.

Norms and forms for rollers

Besides the standard cylindrical rollers Maridt can also offer ZB rollers or rollers with special profiles or according to customer's wishes.

Rolle

Rollers Tolerances
Grade Diameter Gauge
µ
Selection
Groups
µ
Circularity
Tdw µ
Roughness
Ra µ
Length Tolerance
µ
G2
- 26
+ 6 - 10
2 1,0 0,10 Length
< 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
< 20 mm + 0,000 - 0,050
26 40
5 1,5 0,20
40 -
5 3,0 0,30


Norms and forms for needle rollers

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

Nadel ANadel B

Tolerances 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 H 13 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 rollers length.


For special demands

Rollers with special profiles can be offered according to customer' s requirements