Joint Units For Ball Screws and Motors

* 1 Machined wrench relief for mounting and adjusting the clamp screws for joint units BJS20A and BJSM20A.
[ ! ] When used together with a MISUMI ball screw, there is 1 support unit accessory collar spare.

Type	[M] Material		[S] Surface Treatment		[A]Accessory	Applicable Motor
	Main Body	Support Units	Main Body	Support Units
BJS	EN AW−5052 Equiv.	EN 1.1191 Equiv.	Clear Anodize	Black Oxide	Collar 2 pcs. Bearing Nut 1 pc. (With Set Piece)	AC Servo Motor
BJSM				Electroless Nickel Plating

■Features - Simplification of Assembly: With a support bearing unit already pre-installed, mounting and aligning a motor becomes simple with a build-in pilot.

·Accurate Shaft Centering: Unitized construction of ball screw and motor mounts reduces shaft misalignments.

Part Number		d	B1	B2	D1	D2	D3	E	F	H1	H2	J	K	L	N	Q	S	T1	T2	W1	W2	X1	X2	Y1	Y2	P.C.D.	M1 (Fine)	M2 (Coarse)	d1	ℓ	Support Units
Type	No.																														BJS	BJSM
BJS BJSM	* 8 A	8	67	9	30	28	11.5	21	64	41	19	43	40	10	12	12	6	47	52	40	35	5	14	5.5	6.5	45	M8 × 1.0	M3	5.5	8	BRW8	—
	* 8B																									46		M4		10
	* 10 A	10	74	13	30	34	14	25	70	46	23	46	42	10	14	14	7	54	56	42	42	8	16	5.5	8	45	M10 × 1.0	M3	6.5	8	BRW10	BRWN10
	10B																									46		M4		10
	* 12 A	12	74	13	30	36	15	25	72	47	23	46	44	10	14	14	7	54	58	44	44	8	16	5.5	8	45	M12 × 1.0	M3	6.5	8	BRW12	BRWN12
	12B																									46		M4		10
	12C		84		50			31	98	62	26	56	62	13		18	9	58	80	62						70		M5	8.5	Through
	15 A	15	97	15	50	40	20	31	98	61	26	63	62	13	17	18	9	71	80	62	52	8	18	10	10	70	M15 × 1.0	M5	8.5	13	BRW15	BRWN15
	15B		106		70			41	128	82	36	72	82	16		23	11	74	106	82						90		M6	10.5	15
	20 A	20	117	22	50	57	25	35	116	70	30	69	70	20	24	23	11	77	94	70	68	14	28	11	13	70	M20 × 1.0	M5	10.5	13	BRW20	BRWN20
	20B		127		70			41	128	82	36	79	82					87	106	82	68					90		M6		15

[ ! ] * marked sizes are for BJS only.
■ Motor Compatibility Chart

Part Number	Motor			Part Number	Motor
	Flange Size	Manufacturer	Output (W)		Flange Size	Manufacturer	Output (W)
BJS8A BJS10A BJS12A	□38	Panasonic	30	BJS (M) 12C BJS (M) 15 A BJS (M) 20 A	□60	Yaskawa Electric Corporation	200
			50				400
			100			Mitsubishi Electric Corporation	200
BJS8B BJS (M) 10B BJS (M) 12B	□40	Yaskawa Electric Corporation	30				400
			50			Sanyo Denki Co., Ltd.	200
			100				400
		Mitsubishi Electric Corporation	50			Omron Corporation	200
			100				400
		Sanyo Denki Co., Ltd.	30	BJS (M) 15B BJS (M) 20B	□80	Yaskawa Electric Corporation	750
			50			Mitsubishi Electric Corporation	750
			100			Sanyo Denki Co., Ltd.	750
		Omron Corporation	30			Omron Corporation	750
			50
			100

[!] Motor part numbers and specifications are subject to change. Refer to motor manufacturer's specifications.
[ ! ] Selection of motors, ball screws and couplings should be made upon confirming user's application specific criteria.
[!] Other motors and couplings not listed in the chart can also be used. Confirm the mounting dimensions and specifications of each product.