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Standard balls Polishing und grinding balls Rollers and needles

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

Email-Adresse mail@maridt.de