BXW Models

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Features of BXW Models

A total of four types are available: three types with the same dimensions but different load torques and one type with specifications and dimensions matched to compact servo motors [ ]40, [ ]60, and [ ]80.Select the one that best matches your application and life cycle. All types satisfy the rated torque values from the initial use, so the customer does not need to break them in.

BXW Models Specifications

BXW-□-□L/-H/-S Types
BXW-□-□R Types
- [Specifications]
- [Dimensions]

BXW-□-□L/-H/-S Types

[Specifications] BXW-□-□L (Braking use)

Model	Size	Static friction torque Ts [N･m]	Coil (at 20℃)				Heat resistance class	Lead wire		Max. rotation speed ［min^-1］	Rotating part moment of inertia J ［kg・m²］	Allowable braking energy rate Pbaℓ ［W］	Total braking energy ET ［J］	Armature pull-in time ta ［s］	Armature release time tar ［s］	Mass ［kg］
Model	Size	Static friction torque Ts [N･m]	Voltage ［V］	Wattage ［W］	Current ［A］	Resistance ［Ω］	Heat resistance class	UL style	Size	Max. rotation speed ［min^-1］	Rotating part moment of inertia J ［kg・m²］	Allowable braking energy rate Pbaℓ ［W］	Total braking energy ET ［J］	Armature pull-in time ta ［s］	Armature release time tar ［s］	Mass ［kg］
BXW-01-10L	01	0.12	12	5.0	0.417	28.8	F	UL3398	AWG26	5000	0.6×10^-6	2.5	1.5×10⁶	0.008	0.015	0.2
			24	5.0	0.208	115	F
			45	5.0	0.111	405	F
			90	5.0	0.056	1622	F
			180	5.0	0.028	6486	F
BXW-02-10L	02	0.25	12	6.6	0.550	21.8	F	UL3398	AWG26	5000	1.9×10^-6	5.0	3.0×10⁶	0.008	0.015	0.3
			24	6.6	0.275	87.3	F
			45	6.6	0.147	307	F
			90	6.6	0.073	1228	F
			180	6.6	0.037	4912	F
BXW-02-12L	02	0.25	12	6.6	0.550	21.8	F	UL3398	AWG26	5000	1.9×10^-6	5.0	3.0×10⁶	0.008	0.015	0.3
			24	6.6	0.275	87.3	F
			45	6.6	0.147	307	F
			90	6.6	0.073	1228	F
			180	6.6	0.037	4912	F
BXW-03-10L	03	0.50	12	9.0	0.750	16.0	F	UL3398	AWG26	5000	3.8×10^-6	10.0	4.5×10⁶	0.025	0.025	0.4
			24	9.0	0.375	64.0	F
			45	8.2	0.182	247	F
			90	8.2	0.091	988	F
			180	8.2	0.046	3954	F
BXW-03-12L	03	0.50	12	9.0	0.750	16.0	F	UL3398	AWG26	5000	3.8×10^-6	10.0	4.5×10⁶	0.025	0.025	0.4
			24	9.0	0.375	64.0	F
			45	8.2	0.182	247	F
			90	8.2	0.091	988	F
			180	8.2	0.046	3954	F
BXW-04-10L	04	1.00	12	11.5	0.958	12.5	F	UL3398	AWG22	5000	12.0×10^-6	20.0	7.0×10⁶	0.030	0.030	0.6
			24	11.5	0.479	50.1	F
			45	10.0	0.222	203	F
			90	10.0	0.111	810	F
			180	10.0	0.056	3241	F
BXW-04-12L	04	1.00	12	11.5	0.958	12.5	F	UL3398	AWG22	5000	12.0×10^-6	20.0	7.0×10⁶	0.030	0.030	0.6
			24	11.5	0.479	50.1	F
			45	10.0	0.222	203	F
			90	10.0	0.111	810	F
			180	10.0	0.056	3241	F
BXW-05-10L	05	2.00	12	13.0	1.083	11.1	F	UL3398	AWG22	5000	23.0×10^-6	30.0	12.0×10⁶	0.035	0.035	0.8
			24	13.0	0.542	44.3	F
			45	13.0	0.289	156	F
			90	13.0	0.144	623	F
			180	13.0	0.072	2492	F
BXW-05-12L	05	2.00	12	13.0	1.083	11.1	F	UL3398	AWG22	5000	23.0×10^-6	30.0	12.0×10⁶	0.035	0.035	0.8
			24	13.0	0.542	44.3	F
			45	13.0	0.289	156	F
			90	13.0	0.144	623	F
			180	13.0	0.072	2492	F

*Depending on the initial torque characteristics, break-in to condition the engaging surfaces may be required.

[Specifications] BXW-□-□H (Holding use)

Model	Size	Static friction torque Ts [N･m]	Coil (at 20℃)				Heat resistance class	Lead wire		Max. rotation speed ［min^-1］	Rotating part moment of inertia J ［kg・m²］	Allowable braking energy rate Pbaℓ ［W］	Total braking energy ET ［J］	Armature pull-in time ta ［s］	Armature release time tar ［s］	Mass ［kg］
Model	Size	Static friction torque Ts [N･m]	Voltage ［V］	Wattage ［W］	Current ［A］	Resistance ［Ω］	Heat resistance class	UL style	Size	Max. rotation speed ［min^-1］	Rotating part moment of inertia J ［kg・m²］	Allowable braking energy rate Pbaℓ ［W］	Total braking energy ET ［J］	Armature pull-in time ta ［s］	Armature release time tar ［s］	Mass ［kg］
BXW-01-10H	01	0.24	12	5.0	0.417	28.8	F	UL3398	AWG26	5000	0.6×10^-6	0.5	0.2×10⁶	0.010	0.010	0.2
			24	5.0	0.208	115	F
			45	5.0	0.111	405	F
			90	5.0	0.056	1622	F
			180	5.0	0.028	6486	F
BXW-02-10H	02	0.50	12	6.6	0.550	21.8	F	UL3398	AWG26	5000	1.9×10^-6	1.0	0.3×10⁶	0.010	0.010	0.3
			24	6.6	0.275	87.3	F
			45	6.6	0.147	307	F
			90	6.6	0.073	1228	F
			180	6.6	0.037	4912	F
BXW-02-12H	02	0.50	12	6.6	0.550	21.8	F	UL3398	AWG26	5000	1.9×10^-6	1.0	0.3×10⁶	0.010	0.010	0.3
			24	6.6	0.275	87.3	F
			45	6.6	0.147	307	F
			90	6.6	0.073	1228	F
			180	6.6	0.037	4912	F
BXW-03-10H	03	1.00	12	9.0	0.750	16.0	F	UL3398	AWG26	5000	3.8×10^-6	2.0	0.5×10⁶	0.035	0.020	0.4
			24	9.0	0.375	64.0	F
			45	8.2	0.182	247	F
			90	8.2	0.091	988	F
			180	8.2	0.046	3954	F
BXW-03-12H	03	1.00	12	9.0	0.750	16.0	F	UL3398	AWG26	5000	3.8×10^-6	2.0	0.5×10⁶	0.035	0.020	0.4
			24	9.0	0.375	64.0	F
			45	8.2	0.182	247	F
			90	8.2	0.091	988	F
			180	8.2	0.046	3954	F
BXW-04-10H	04	2.00	12	11.5	0.958	12.5	F	UL3398	AWG22	5000	12.0×10^-6	4.0	1.0×10⁶	0.040	0.025	0.6
			24	11.5	0.479	50.1	F
			45	10.0	0.222	203	F
			90	10.0	0.111	810	F
			180	10.0	0.056	3241	F
BXW-04-12H	04	2.00	12	11.5	0.958	12.5	F	UL3398	AWG22	5000	12.0×10^-6	4.0	1.0×10⁶	0.040	0.025	0.6
			24	11.5	0.479	50.1	F
			45	10.0	0.222	203	F
			90	10.0	0.111	810	F
			180	10.0	0.056	3241	F
BXW-05-10H	05	4.00	12	13.0	1.083	11.1	F	UL3398	AWG22	5000	23.0×10^-6	6.0	2.0×10⁶	0.045	0.030	0.8
			24	13.0	0.542	44.3	F
			45	13.0	0.289	156	F
			90	13.0	0.144	623	F
			180	13.0	0.072	2492	F
BXW-05-12H	05	4.00	12	13.0	1.083	11.1	F	UL3398	AWG22	5000	23.0×10^-6	6.0	2.0×10⁶	0.045	0.030	0.8
			24	13.0	0.542	44.3	F
			45	13.0	0.289	156	F
			90	13.0	0.144	623	F
			180	13.0	0.072	2492	F

*The armature pull-in time and armature release time are measured during DC switching.

[Specifications] BXW-□-□S (Dedicated for holding)

Model	Size	Static friction torque Ts [N･m]	Coil (at 20℃)				Heat resistance class	Lead wire		Max. rotation speed ［min^-1］	Rotating part moment of inertia J ［kg・m²］	Allowable braking energy rate Pbaℓ ［W］	Total braking energy ET ［J］	Armature pull-in time ta ［s］	Armature release time tar ［s］	Mass ［kg］
Model	Size	Static friction torque Ts [N･m]	Voltage ［V］	Wattage ［W］	Current ［A］	Resistance ［Ω］	Heat resistance class	UL style	Size	Max. rotation speed ［min^-1］	Rotating part moment of inertia J ［kg・m²］	Allowable braking energy rate Pbaℓ ［W］	Total braking energy ET ［J］	Armature pull-in time ta ［s］	Armature release time tar ［s］	Mass ［kg］
BXW-01-10S	01	0.36	24	5.0	0.208	115	F	UL3398	AWG26	5000	0.6×10－6	－	－	0.025	0.010	0.2
BXW-02-10S	02	0.75	24	6.6	0.275	87.3	F	UL3398	AWG26	5000	1.9×10^-6	－	－	0.030	0.010	0.3
BXW-02-12S	02	0.75	24	6.6	0.275	87.3	F	UL3398	AWG26	5000	1.9×10^-6	－	－	0.030	0.010	0.3
BXW-03-10S	03	1.50	24	9.0	0.375	64.0	F	UL3398	AWG26	5000	3.8×10^-6	－	－	0.035	0.020	0.4
BXW-03-12S	03	1.50	24	9.0	0.375	64.0	F	UL3398	AWG26	5000	3.8×10^-6	－	－	0.035	0.020	0.4
BXW-04-10S	04	2.60	24	11.5	0.479	50.1	F	UL3398	AWG22	5000	12.0×10^-6	－	－	0.040	0.025	0.6
BXW-04-12S	04	2.60	24	11.5	0.479	50.1	F	UL3398	AWG22	5000	12.0×10^-6	－	－	0.040	0.025	0.6
BXW-05-10S	05	5.20	24	13.0	0.542	44.3	F	UL3398	AWG22	5000	23.0×10^-6	－	－	0.045	0.030	0.8
BXW-05-12S	05	5.20	24	13.0	0.542	44.3	F	UL3398	AWG22	5000	23.0×10^-6	－	－	0.045	0.030	0.8

*The armature pull-in time and armature release time are taken during DC switching.

[Dimensions]

単位 [mm]

Size	Radial direction dimensions														Axial direction dimentions							Bore dimensions
Size	A	B	C	D	E	S	V	R	F	m	O	P	Q	U	G	I	J	K	L	N	a	d	b	t
01	37	32	18	13.5	12.0	6	3	3	10	M3	－	－	－	－	4.5	5.0	22.5	31.5	9	22.5	0.10	5	－	－
01	37	32	18	13.5	12.0	6	3	3	10	M3	－	－	－	－	4.5	5.0	22.5	31.5	9	22.5	0.10	6	－	－
02	47	40	21	16.0	14.5	7	3.4	3.4	12	M3	9(10.2)	50	13	51	6.0	5.5	19.2	31.2	12	20.0	0.10	6	－	－
02	47	40	21	16.0	14.5	7	3.4	3.4	12	M3	9(10.2)	50	13	51	6.0	5.5	19.2	31.2	12	20.0	0.10	7	－	－
03	56	48	24	19.0	17.0	7	3.4	3.4	14	M3	11(11.7)	60	15	60	6.0	6.0	19.9	31.9	12	20.0	0.15	8	－	－
04	65	58	35	24.0	22.0	7	3.4	3.4	18	M4	12(12.5)	70	15	70	7.0	7.0	19.9	33.9	14	21.0	0.15	10	3	1.2
05	75	66	36	28.0	26.5	9	4.5	4.5	22	M4	14(14.5)	80	20	80	7.0	7.0	22.1	36.1	14	21.5	0.15	12	4	1.5

* There is no release lever option for size #01.

* The dimensions in parentheses ( ) are values for BXW- □ - □ S.

BXW-□-□R Types

[Specifications]

Model	Size	Static friction torque Ts ［N・m］	Coil (at 20℃)				Heat resistance class	Lead wire		Max. rotation speed ［min^-1］	Rotating part moment of inertia J ［kg・m²］	Allowable braking energy rate Ebaℓ ［J］	Total braking energy ET ［J］	Armature pull-in time ta ［s］	Armature release time tar ［s］	Mass ［kg］
Model	Size	Static friction torque Ts ［N・m］	Voltage ［V］	Wattage ［W］	Current ［A］	Resistance ［Ω］	Heat resistance class	UL style	Size	Max. rotation speed ［min^-1］	Rotating part moment of inertia J ［kg・m²］	Allowable braking energy rate Ebaℓ ［J］	Total braking energy ET ［J］	Armature pull-in time ta ［s］	Armature release time tar ［s］	Mass ［kg］
BXW-01-10R	01	0.3	24	6.1	0.254	94.4	F	UL3398	AWG26	6000	1.36×10^-7	15	3000	0.035	0.020	0.1
BXW-03-10R	03	1.3	24	7.2	0.300	80.0	F	UL3398	AWG22	6000	1.17×10^-6	87	17000	0.050	0.020	0.3
BXW-05-10R	05	2.5	24	8.0	0.333	72.0	F	UL3398	AWG22	6000	3.68×10^-6	200	40000	0.060	0.020	0.5

*The armature pull-in time and armature release time are taken during DC switching.

[Dimensions]

Unit ［mm］

Size	Radial direction dimensions										Axial direction dimentions								Bore dimensions
Size	A	r	B	C	D	E	S	V	R	F	G	H	I	J	K	L	N	a	d	d max
01	33	R0.5	26.5	16	9	14	7	3.4	32.5	12	0.2	4	19	25.5～26	30	4	22.8	0.1	8.5	8.5
03	48	R1	42	26	14	23	8	3.4	47.5	19	0.2	4	18	25.5～26	30	4	22.6	0.1	11	15
05	64	R1	56	28	22	31	8	4.5	63.5	25	0.2	4	16	25～25.5	30	4.5	21.3	0.1	16	20

*Bore diameters other than the standard bore diameters given above are also possible. d max indicates the maximum bore diameter with a round shaft.

*In addition to round bores, key processing can also be handled. Consult Miki Pulley for details.

*Dimensions, mounting and the like are not interchangeable with other BXW models.

Options of BXW Models

Dust Covers

There are dust covers available as optional parts. These dust covers can be used to prevent dust and other foreign particles from entering into the parts, enabling the unit to be used in harsher work environments.
There are two types of dust covers to choose from, one without bores drilled into it for the shaft through-holes that can be used to provide full cover and one with bores drilled into it for the shaft through-holes that can be used with the shaft inserted into the brake. There are also options for the positions of lead wire connecting bores, using either a plate-mounting position or a stator-mounting position for mounting the brake.

[Specifications]

Material	Ethylene propylene diene monomer (EPDM) rubber
Temperature range	-40°C to +140°C
Exterior color	Black
Applicable brake models	L type, H type, S type BXW models
Applicable brake sizes	#01, #02, #03, #04, #05
Applicable specification voltages	12 V DC, 24 V DC, 45 V DC, 90 V DC 180 V DC

*The temperature range listed is for the dust cover material. The overall operating temperature range for BXW models is from -10°C to +40°C.

*This part cannot be used with BXW models that come with release levers and R type BXW models.

Dimensions

Type No.	a	b	c
01	×	×	×
02	×	×	○
03	×	○	×
04	○	×	×
05	○	×	○
06	○	○	×

Unit (mm)

Model	⌀A	B	⌀d
BXW-01-C □	41	33	16
BXW-02-C □	51	33	21
BXW-03-C □	60	33.5	24
BXW-04-C □	69	35.5	30
BXW-05-C □	79	37.5	30

*The "a" symbol in the drawings is used to indicate parts with drilled bores for inserting shafts, the "b" symbol for parts with drilled bores for connecting lead wires for mounted plates, and the "c" symbol for parts with drilled bores for connecting lead wires for mounted stators.

*Types no. 01 and 04 will need to have separate bores drilled into them for connecting lead wires.