BM Series- Simple Angular Machined Ends

• R-10, 11, 15, 16

.2757
.2754

.187
.186

.2500
.2495

2.15

1.70

1.240

.276

.035

1/4-28

N/A

1/16x3/8

1.38

1/16x3/4

• 1/2-10

.3544
.3541

.250
.249

.2500
.2495

2.45

1.82

1.320

.315

.035

5/16-24

N/A

3/32x1/2

1.38

1/16x3/4

• R-2, 20, 21, 22, 23
• 5/8-8

BM-10

.3940
.3936

.312
.311

.3750
.3745

2.84

2.09

1.700

.354

.000

.391-32

W-00

N-00

1/8x1/2

1.75

1/8x7/8

CAD

• R-1, 30, 31, 32, 30A
• 5/8-10, 3/4-5, 3/4-6

BM-12

.4726
.4723

.406
.405

.5000
.4995

3.29

2.00

1.566

.472

.025

.469-32

W-01

N-01

1/8x5/8

2.25

1/8x1 5/8

CAD

• R-4, 34, 35, 36, 37, 38
• 3/4-10, 7/8-5, 7/8-6, 1-4, 1-5

BM-15

.5908
.5905

.500
.499

.5000
.4995

3.59

2.59

2.145

.512

.040

.586-32

W-02

N-02

1/8x5/8

2.25

1/8x1 5/8

CAD

• R-6, 40, 40A, 40B, 40RF, 41,
41LF, 42, 43, 44, 48
• 1-10, 1 1/8-5, 1 1/4-4

BM-20

.7877
.7873

.625
.624

.7500
.7495

4.00

2.88

2.378

.590

.040

.781-32

W-04

N-04

3/16x5/8

2.87

3/16x1 1/2

CAD

• R-45, 46, 47, 55, 56, 57, 58
• 1 1/2-4

BM-25

.9846
.9842

.750
.749

1.0000
.9995

4.45

2.89

2.328

.669

.000

.969-32

W-05

N-05

3/16x1

2.87

1/4x1 3/4

CAD

• R-50, 50A, 51A, 53, 54, 54A
• 1 3/4-4

BM-30

1.1814
1.1810

1.000
.999

1.1875
1.1870

5.33

3.60

3.047

.748

.063

1.173-18

W-06

N-06

1/4x1

4.12

1/4x2

CAD

• R-61, 62

BM-45

1.5752
1.5747

1.375
1.374

1.5000
1.4995

6.93

4.43

3.800

.906

.063

1.563-18

W-08

N-08

5/16x1 1/2

4.94

3/8x3

CAD

• R-60, 60A, 63

1.7721
1.7716

1.375
1.374

1.7500
1.7495

6.68

4.49

3.875

.984

.063

1.767-18

W-09

N-09

5/16x1 1/2

4.94

3/8x3

• R-75

1.9689
1.9684

1.750
1.749

2.0000
1.9995

7.75

4.87

4.200

1.063

.063

1.967-18

W-10

N-10

3/8x1 1/2

5.19

1/2x3 1/4

• R-70, 71, 74

2.1659
2.1653

1.875
1.874

2.0000
1.9995

8.40

5.40

4.700

1.142

.063

2.157-18

W-11

N-11

1/2x1 1/2

6.37

1/2x3 1/4

• R-80

2.3627
2.3622

2.250
2.249

2.4375
2.4365

9.22

5.54

4.832

1.220

.063

2.360-18

W-12

N-12

1/2x2

7.25

5/8x4 7/8

• R-90, 91

3.1501
3.1495

3.000
2.998

3.0000
2.9990

11.55

6.87

6.070

1.535

.063

3.137-12

W-16

N-16

3/4x3

7.56

3/4x5

BM Series - Simple Angular Bearing Mounts

The BM series bearing mounts are SIMPLE supports that utilize a set of angular contact ball bearings mounted back to back. These bearing mounts are designed to support radial and axial load components of force. Consult engineering for application assistance if required.

NOTE: Dimensions shown for screws without corresponding bearing mounts are for reference only. Note: Bearing mounts are supplied factory lubricated


Screw Number • BALL Screws • ACME Screws	Part Number	S1	S2	S3	A1	A2	A3	A4	A5	A6	A7	A8	A9	A10	A11	Catalog Page	CAD
• R-10, 11, 15, 16		.2757 .2754	.187 .186	.2500 .2495	2.15	1.70	1.240	.276	.035	1/4-28	N/A	N/A	1/16x3/8	1.38	1/16x3/4
• 1/2-10		.3544 .3541	.250 .249	.2500 .2495	2.45	1.82	1.320	.315	.035	5/16-24	N/A	N/A	3/32x1/2	1.38	1/16x3/4
• R-2, 20, 21, 22, 23 • 5/8-8	BM-10	.3940 .3936	.312 .311	.3750 .3745	2.84	2.09	1.700	.354	.000	.391-32	W-00	N-00	1/8x1/2	1.75	1/8x7/8		CAD
• R-1, 30, 31, 32, 30A • 5/8-10, 3/4-5, 3/4-6	BM-12	.4726 .4723	.406 .405	.5000 .4995	3.29	2.00	1.566	.472	.025	.469-32	W-01	N-01	1/8x5/8	2.25	1/8x1 5/8		CAD
• R-4, 34, 35, 36, 37, 38 • 3/4-10, 7/8-5, 7/8-6, 1-4, 1-5	BM-15	.5908 .5905	.500 .499	.5000 .4995	3.59	2.59	2.145	.512	.040	.586-32	W-02	N-02	1/8x5/8	2.25	1/8x1 5/8		CAD
• R-6, 40, 40A, 40B, 40RF, 41, 41LF, 42, 43, 44, 48 • 1-10, 1 1/8-5, 1 1/4-4	BM-20	.7877 .7873	.625 .624	.7500 .7495	4.00	2.88	2.378	.590	.040	.781-32	W-04	N-04	3/16x5/8	2.87	3/16x1 1/2		CAD
• R-45, 46, 47, 55, 56, 57, 58 • 1 1/2-4	BM-25	.9846 .9842	.750 .749	1.0000 .9995	4.45	2.89	2.328	.669	.000	.969-32	W-05	N-05	3/16x1	2.87	1/4x1 3/4		CAD
• R-50, 50A, 51A, 53, 54, 54A • 1 3/4-4	BM-30	1.1814 1.1810	1.000 .999	1.1875 1.1870	5.33	3.60	3.047	.748	.063	1.173-18	W-06	N-06	1/4x1	4.12	1/4x2		CAD
• R-61, 62	BM-45	1.5752 1.5747	1.375 1.374	1.5000 1.4995	6.93	4.43	3.800	.906	.063	1.563-18	W-08	N-08	5/16x1 1/2	4.94	3/8x3		CAD
• R-60, 60A, 63		1.7721 1.7716	1.375 1.374	1.7500 1.7495	6.68	4.49	3.875	.984	.063	1.767-18	W-09	N-09	5/16x1 1/2	4.94	3/8x3
• R-75		1.9689 1.9684	1.750 1.749	2.0000 1.9995	7.75	4.87	4.200	1.063	.063	1.967-18	W-10	N-10	3/8x1 1/2	5.19	1/2x3 1/4
• R-70, 71, 74		2.1659 2.1653	1.875 1.874	2.0000 1.9995	8.40	5.40	4.700	1.142	.063	2.157-18	W-11	N-11	1/2x1 1/2	6.37	1/2x3 1/4
• R-80		2.3627 2.3622	2.250 2.249	2.4375 2.4365	9.22	5.54	4.832	1.220	.063	2.360-18	W-12	N-12	1/2x2	7.25	5/8x4 7/8
• R-90, 91		3.1501 3.1495	3.000 2.998	3.0000 2.9990	11.55	6.87	6.070	1.535	.063	3.137-12	W-16	N-16	3/4x3	7.56	3/4x5
BM Series - Simple Angular Bearing Mounts The BM series bearing mounts are SIMPLE supports that utilize a set of angular contact ball bearings mounted back to back. These bearing mounts are designed to support radial and axial load components of force. Consult engineering for application assistance if required. NOTE: Dimensions shown for screws without corresponding bearing mounts are for reference only. Note: Bearing mounts are supplied factory lubricated