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Ball guides assembled (Bushing / Cage / Shaft) (Part Numbers)

Ball-bearing guides for linear and rotational movements without backlash for use in all technical areas where reliability and precision are required.

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MARMOTION. High-Precision Rotary Stroke Bearings - Product Lineup

Guide Shafts

N400		to DIN 9825
N421		with internal thread on press - in side
N423		with internal thread on guide side
N425		with internal thread on both sides

Ball Cages

N500		Plastic
N501		Brass
N511		Brass with Circlip

Guide Bushes

N550		open
N552		closed with Stop Rings
N553		closed with Sealing Rings
N570		closed with Wiper Seals

Ball Cages Mini Range

N502

Brass

Guide Bushes Mini Range

N550		open
N552		closed with Stop Rings

Bellows

N820

Chrome Leather

General Description

Recent decades have seen high-precision Mahr MarMotion rotary stroke bearings for linear and rotary motion extend their area of application from the pressing tool sector to include general mechanical engineering, precision mechanical and optical engineering and a wide range of specialized fields.
In the course of this development work, Mahr has devised computation formulae based on the company's long experience and supported by close cooperation with various technical colleges and universities. This expertise helps designers to optimize the rotary stroke bearing for a particular application. This results in excellent guiding accuracy, optimum reliability and long service life.
The rotary stroke bearings manufactured with great precision by Mahr mean that the user can be sure that components are interchangeable. The MarMotion high-precision rotary stroke bearing can therefore be considered an integral part of the mechanical and design elements.

Features

The main features of the MarMotion high-precision rotary stroke bearings are as follows:

Maximum guiding accuracy

The MarMotion high-precision rotary stroke bearing offers high guiding accuracy for both linear and rotary movements. This is guaranteed by the micro-finished running faces of shafts and bushes, whose accuracy of form in terms of roundness and cylindricity lies within 1/3 of ISO tolerance class IT 3. The exclusive use of grade 5, sorting class P0 steel balls (DIN 5401 or ISO 3290) also contributes to the high degree of guiding accuracy.

Backlash-free guiding

There is no backlash whatsoever in the guide because the balls are preloaded under a tension of a few μm between the shaft and the bush. Optimum preloading is ensured in the factory by pairing the shaft, ball cage and bush. This simplifies the process of fitting the rotary stroke bearing.

Smooth running

The MarMotion high-precision rotary stroke bearing ensures both maximum guiding accuracy and very low friction.
A pure contact rolling motion of the balls on the micro-finished running faces ensures very low friction. The coefficient of friction lies between 0.001 and 0.008 and ensures smooth running.

High loading capacity and guiding rigidity

The dense arrangement of the balls and the high form and dimensional accuracy of the balls and bearing faces provide a large number of contact points, thereby ensuring uniform distribution of the load in the guide. The designer can make optimum use of the available space. The functional reliability of the guide is significantly increased.

Rapid movements, high acceleration

The low friction rolling action in the MarMotion high-precision rotary stroke bearing enables rapid movements and high acceleration. The low inertia forces of plastic cages make these particularly well suited for high-frequency linear and rotary movements.

Long service life

Careful selection and heat treatment of the materials used, coupled with top quality bearing faces, means that the MarMotion high-precision rotary stroke bearings are particularly resistant to abrasion.

Minimum maintenance

In most cases, a thin film of lubricant is sufficient for several months' continuous operation. The outlay required for maintenance during operation is minimal.

Interchangeability

All individual components are interchangeable. This is due to continuous quality control, the exclusive use of balls of sorting group P0, and the machining of shafts and bushes to a high standard of precision. This ensures problem-free continuous operation.

Special designs

The extensive range of MarMotion high-precision rotary stroke bearings offers appropriate solutions for many different applications. We can also manufacture special designs for particular applications and requirements on the basis of workpiece drawings. Using alternative materials can also open up new possibilities.

Data to be displayed: 30; 45; 60

Part Number
5002026.5000017.5010216
5002026.5000017.5010237
5002026.5000017.5010868
5002026.5000017.5010869
5002026.5000017.5010870
5002026.5000017.5010871
5002026.5000017.5010872
5002026.5000017.5010873
5002026.5000017.5010874
5002026.5000017.5010875
5002026.5000017.5010876
5002026.5000017.5010877
5002026.5000018.5010074
5002026.5000018.5010075
5002026.5000018.5010076
5002026.5000018.5010078
5002026.5000018.5010080
5002026.5000018.5010082
5002026.5000018.5010083
5002026.5000018.5010084
5002026.5000018.5010216
5002026.5000018.5010237
5002026.5000018.5010868
5002026.5000018.5010869
5002026.5000018.5010870
5002026.5000018.5010871
5002026.5000018.5010872
5002026.5000018.5010873
5002026.5000018.5010874
5002026.5000018.5010875
5002026.5000018.5010876
5002026.5000018.5010877
5002026.5001035.5010074
5002026.5001035.5010075
5002026.5001035.5010076
5002026.5001035.5010078
5002026.5001035.5010080
5002026.5001035.5010082
5002026.5001035.5010083
5002026.5001035.5010084
5002026.5001035.5010216
5002026.5001035.5010237
5002026.5001035.5010868
5002026.5001035.5010869
5002026.5001035.5010870
5002026.5001035.5010871
5002026.5001035.5010872
5002026.5001035.5010873
5002026.5001035.5010874
5002026.5001035.5010875
5002026.5001035.5010876
5002026.5001035.5010877
5002026.5001036.5010074
5002026.5001036.5010075
5002026.5001036.5010076
5002026.5001036.5010078
5002026.5001036.5010080
5002026.5001036.5010082
5002026.5001036.5010083
5002026.5001036.5010084

Standard Unit Price	Minimum order quantity	Standard Shipping Days ?	No. of Bushings	Shaft type	Bushing type	Cage type	dw (mm)	L (mm)	C (N)	d1 (mm)	dB (mm)	L1 (mm)	L2 (mm)	f (shaft) (mm)	k (mm)
170.11 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Plastic Ball Cage	20	350	740	26	32	33	23	3	66
96.45 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Plastic Ball Cage	20	110	740	26	32	33	23	3	66
115.51 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	110	740	26	32	33	23	3	66
116.37 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	125	740	26	32	33	23	3	66
117.12 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	140	740	26	32	33	23	3	66
118.95 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	160	740	26	32	33	23	3	66
120.89 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	180	740	26	32	33	23	3	66
124.45 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	200	740	26	32	33	23	3	66
138.23 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	250	740	26	32	33	23	3	66
158.80 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	300	740	26	32	33	23	3	66
188.95 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	350	740	26	32	33	23	3	66
222.66 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	400	740	26	32	33	23	3	66
97.95 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Plastic Ball Cage	20	125	960	26	32	33	30	3	88
98.92 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Plastic Ball Cage	20	140	960	26	32	33	30	3	88
100.82 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Plastic Ball Cage	20	160	960	26	32	33	30	3	88
102.65 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Plastic Ball Cage	20	180	960	26	32	33	30	3	88
106.14 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Plastic Ball Cage	20	200	960	26	32	33	30	3	88
119.82 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Plastic Ball Cage	20	250	960	26	32	33	30	3	88
140.60 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Plastic Ball Cage	20	300	960	26	32	33	30	3	88
204.35 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Plastic Ball Cage	20	400	960	26	32	33	30	3	88
170.86 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Plastic Ball Cage	20	350	960	26	32	33	30	3	88
97.20 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Plastic Ball Cage	20	110	960	26	32	33	30	3	88
116.26 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	110	960	26	32	33	30	3	88
117.12 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	125	960	26	32	33	30	3	88
117.88 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	140	960	26	32	33	30	3	88
119.71 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	160	960	26	32	33	30	3	88
121.65 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	180	960	26	32	33	30	3	88
125.20 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	200	960	26	32	33	30	3	88
138.98 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	250	960	26	32	33	30	3	88
159.55 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	300	960	26	32	33	30	3	88
189.71 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	350	960	26	32	33	30	3	88
223.42 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Plastic Ball Cage	20	400	960	26	32	33	30	3	88
118.09 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Brass Ball Cage	20	125	1160	26	32	33	40	3	88
119.06 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Brass Ball Cage	20	140	1160	26	32	33	40	3	88
121.00 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Brass Ball Cage	20	160	1160	26	32	33	40	3	88
122.83 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Brass Ball Cage	20	180	1160	26	32	33	40	3	88
126.38 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Brass Ball Cage	20	200	1160	26	32	33	40	3	88
140.38 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Brass Ball Cage	20	250	1160	26	32	33	40	3	88
161.49 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Brass Ball Cage	20	300	1160	26	32	33	40	3	88
226.43 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Brass Ball Cage	20	400	1160	26	32	33	40	3	88
192.29 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Brass Ball Cage	20	350	1160	26	32	33	40	3	88
117.29 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Brass Ball Cage	20	110	1160	26	32	33	40	3	88
143.68 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Brass Ball Cage	20	110	1160	26	32	33	40	3	88
144.48 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Brass Ball Cage	20	125	1160	26	32	33	40	3	88
145.45 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Brass Ball Cage	20	140	1160	26	32	33	40	3	88
147.38 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Brass Ball Cage	20	160	1160	26	32	33	40	3	88
149.22 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Brass Ball Cage	20	180	1160	26	32	33	40	3	88
152.77 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Brass Ball Cage	20	200	1160	26	32	33	40	3	88
166.77 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Brass Ball Cage	20	250	1160	26	32	33	40	3	88
187.88 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Brass Ball Cage	20	300	1160	26	32	33	40	3	88
218.68 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Brass Ball Cage	20	350	1160	26	32	33	40	3	88
252.82 €	1	12 Days	1	Guide shaft with internal thread on both sides	Open Guide Bush	Brass Ball Cage	20	400	1160	26	32	33	40	3	88
119.92 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Brass Ball Cage	20	125	1390	26	32	33	48	3	108
120.89 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Brass Ball Cage	20	140	1390	26	32	33	48	3	108
122.83 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Brass Ball Cage	20	160	1390	26	32	33	48	3	108
124.66 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Brass Ball Cage	20	180	1390	26	32	33	48	3	108
128.22 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Brass Ball Cage	20	200	1390	26	32	33	48	3	108
142.22 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Brass Ball Cage	20	250	1390	26	32	33	48	3	108
163.32 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Brass Ball Cage	20	300	1390	26	32	33	48	3	108
228.26 €	1	12 Days	1	Guide Shaft	Open Guide Bush	Brass Ball Cage	20	400	1390	26	32	33	48	3	108

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Basic Attributes

No. of Bushings
- 1
- 2
Clear
Shaft type
- Guide Shaft
- Guide shaft with internal thread on both sides
Clear
Bushing type
- Closed Guide Bush with Sealing Rings
- Closed Guide Bush with Stop Rings
- Closed Guide Bush with Wiper Seals
- Open Guide Bush
Clear
Cage type
- Brass Ball Cage
- Brass Ball Cage - Mini Range
- Brass Ball Cage with Circlip
- Plastic Ball Cage
Clear
dw(mm)
2.5

3

4

5

6

8

10

12

14

15

16

18

20

25

32

40
Clear
L(mm)
30

40

50

60

80

90

100

110

125

128

140

150

160

180

200

220

240

250

260

300

350

400

450

500

600
Clear
C(N)
7

9

11

14

15

19

23

24

26

29

30

34

35

40

48

50

56

60

72

75

78

95

110

112

122

128

130

146

150

170

180

190

202

220

225

235

258

260

290

295

300

310

365

415

440

520

525

530

550

580

645

650

715

740

750

790

870

910

960

1000

1010

1025

1060

1160

1180

1290

1320

1325

1390

1400

1440

1550

1610

1620

1625

1670

1680

1700

1840

1950

1970

2070

2100

2200

2220

2320

2360

2450

2880

3030

3040

3210

3600

3800

4030

4070

4350

4390

4420

5200

5650

5740

6150

6650

6750

7150

8130

9750
Clear
d1(mm)
4.1

5

6

7

8

10

13

15

17

20

21

22

24

26

31

40

48
Clear
dB(mm)
6

7

8

10

11

14

18

20

22

25

26

28

30

32

35

38

42

48

55

60

65
Clear
L1(mm)
10

12

12.5

15

16

20

25

26

30

31

33

35

36

38

40

42

44

45

46

48

49

50

56

57

58

60

63

64

65

66

70

71

73

75

78

79

80

82

83

86

90

92

96

97

112

119

120

126

132

139

145

152

172

178
Clear
L2(mm)
10

12

12.5

15

16

20

21

23

25

28

30

34

35

36

40

48

50

51

52

54

56

58

60

62

63

68

70

71

75

76

78

80

84

87

93

95

100

102

110

125

150
Clear
f (shaft)(mm)
- 1
- 1.5
- 2
- 3
- 4
Clear
f (cage)(mm)
- 0
- 2.5
- 2.8
- 4.8
Clear
k(mm)
18

22

24

26

28

30

34

36

38

40

42

46

50

54

56

60

64

66

70

72

75

76

78

80

84

88

90

100

104

108

110

112

118

120

122

124

130

134

138

140

144

146

150

152

154

156

162

168

176

180

192

194

196

198

202

204

212

234

242

258

270

306

308

310

336

342

360

386

468
Clear
L3(mm)
0

11

13

18

22

23

27

28

33

36

38

39

42

47

50

54

55

56

58

59

63

64

66

67

70

72

74

82

86

96

106

108

110

125

137

147

162
Clear
e(mm)
0

51

53

56

66

83

98

115

135
Clear
m(mm)
- 0
- 6
- 8
- 10
- 12
Clear
n(mm)
- 0
- 16
- 19
- 22
- 25
- 28
Clear