Drive Assemblies - Base Mount Bearing

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2" to 4" - Spec's

2" to 4" - Nut Dim's

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4mm to 14mm Miniature

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25mm to 50mm Ground

Drive Assemblies

NEMA 17 Motor Mount

NEMA 23 Motor Mount

NEMA 34 Motor Mount

NEMA 42 Motor Mount

Flange Mount Bearing

Base Mount Bearing

T23 Stock Stage

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Round Rail Guides

Full Support - Std Block

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Mounting Flanges

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Assembly No.	Axial Load*	F	S	A	C1	C2	D ± 0.000 0.001	H	K1	K2	M1	M2	N1	N2	P1	P2	B1	B2
B6BF	230 lbs	0.40	—	0.63	—	1.00	0.187	0.512	0.216 thru .37 cbore .43 deep	—	—	1.66	—	0.98	—	1.18	—	0.78
B6BS			0.19		0.37					0.22 thru	1.66		0.95		1.26		0.39
B6BE			—		—					—	—		—		—		—
B8BF	326 lbs	0.45	—	0.63	—	1.18	0.250	0.669	0.260 thru .43 cbore .47 deep	—	—	2.05	—	1.26	—	1.50	—	1.02
B8BS			0.25		0.50					0.26 thru	2.01		1.18		1.50		0.51
B8BE			—		—					—	—		—		—		—
B12BF	680 lbs	0.47	—	0.75	—	1.40	0.375	0.984	0.354 thru .55 cbore .43 deep	—	—	2.76	—	1.70	—	2.05	—	1.38
B12BS			0.31		0.62					0.35 thru	2.76		1.69		2.13		0.60
B12BE			—		—					—	—		—		—		—
B15BF	760 lbs	0.49	—	0.75	—	1.67	0.500	1.181	0.433 thru .67 cbore .59 deep	—	—	3.15	—	1.97	—	2.36	—	1.58
B15BS			0.31		0.62					0.35 thru	3.15		2.00		2.44		0.71
B15BE			—		—					—	—		—		—		—
B20BF	1,852 lbs	0.39	—	1.00	—	2.44	0.625	1.181	0.433 thru .67 cbore .59 deep	—	—	3.74	—	2.28	—	2.95	—	1.77
B20BS			0.50		1.00					0.43 thru	3.74		2.44		3.07		0.79
B20BE			—		—					—	—		—		—		—

	†Note flange radius. Some flanges may interfere with the mounting surface. *Maximum assembly load. Do not exceed the dynamic load rating of the lead nut.