Rollico

Linear ball bearings - MM

Linear ball bearings

Linear ball bearings are a crucial component of any linear guidance system. They enable smooth, precise, and failure-free motion along precision shafts, while minimizing friction and component wear.

MM

Product configurator
MM-type linear ball bearing
Minature series

Technical drawing of MM type linear ball bearing.

Dimension table of MM type linear ball bearing.

Type
Ød
ØD
L
L1
L2
min
n
ball tracks no.
Dyn. load capacity
C*
[N]
Stat. load capacity
C0*
[N]
Weight
[kg]
MM-03
3
7
10
-
-
4
45
50
0.001
MM-05
5
12
22
14.2
1.10
4
170
190
0.010
MM-08
8
16
25
16.2
1.10
4
310
340
0.020
MM-12
12
22
32
22.6
1.3
5
650
715
0.030
All dimensions in the table are in [mm], unless stated otherwise.
*Load capacity values are given for hardened and ground precision shafts (min. 59 HRC)
*For precision linear shafts of  lower hardness, the effective load capacitied equal:
- for WRA: Cef = 0,74·C   Coef=0,8·Co
- for WRB: Cef = 0,63·C   Coef=0,7·Co
Stainless steel version available upon request. MM-03 linear ball bearing available only without wipers.

Designation Method

 
MM
04
WW
Series      
Size      
Internal wipers      

Precision

Sorting tolerance
up to 0.5 µm

Quality

Quality Management System
compliant with ISO 9001:2015

Experience

Over 20 years of expertise
in linear technology.

Customization

We manufacture components
tailored to individual requirements

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