Model 112 | Miki Pulley

This is a compact line of micro-sized electromagnetically operated brakes that activate when an electric current is applied to the coil. These high-performance, compact brakes share the same basic design as small clutches. Three types of armature assemblies with different mounting configurations are available, allowing you to select the one that best suits your needs.

[Specifications]

Model	Size	Dynamic friction torque T_d [N·m]	Coil (at 20°C)				Temperature Rating	Lead Wire		Maximum rotational speed [min⁻¹]	Armature moment of inertia J [kg·m²]	Permissible braking work Ebaℓ [J]	Total work until air gap readjustment ET [J]	Armature deceleration time ta [s]	Torque rise time tp [s]	Torque decay time td [s]	Mass [kg]
Model	Size	Dynamic friction torque T_d [N·m]	Voltage [V]	Power [W]	Current [A]	Resistance [Ω]	Temperature Rating	UL Style	Size	Maximum rotational speed [min⁻¹]	Armature moment of inertia J [kg·m²]	Permissible braking work Ebaℓ [J]	Total work until air gap readjustment ET [J]	Armature deceleration time ta [s]	Torque rise time tp [s]	Torque decay time td [s]	Mass [kg]
112-02-13	2	0.4	DC24	6	0.25	96	B	UL3398	AWG 26	10,000	6.75×10⁻⁷	1500	2×10⁶	0.004	0.01	0.01	0.053
February 12, 2011	2	0.4	DC24	6	0.25	96	B	UL3398	AWG 26	10,000	1.00×10⁻⁶	1500	2×10⁶	0.004	0.01	0.01	0.057
February 11, 2011	2	0.4	DC24	6	0.25	96	B	UL3398	AWG 26	10,000	1.00×10⁻⁶	1500	2×10⁶	0.004	0.01	0.01	0.057
March 13, 2011	3	0.6	DC24	6	0.25	96	B	UL3398	AWG 26	10,000	1.30×10⁻⁶	2300	3×10⁶	0.005	0.012	0.008	0.072
March 12, 2011	3	0.6	DC24	6	0.25	96	B	UL3398	AWG 26	10,000	1.95×10⁻⁶	2300	3×10⁶	0.005	0.012	0.008	0.079
March 11, 2011	3	0.6	DC24	6	0.25	96	B	UL3398	AWG 26	10,000	1.95×10⁻⁶	2300	3×10⁶	0.005	0.012	0.008	0.079
April 13, 2011	4	1.2	DC24	8	0.33	72	B	UL3398	AWG 26	10,000	4.38×10⁻⁶	4500	6×10^⁶	0.007	0.016	0.01	0.118
April 12, 2011	4	1.2	DC24	8	0.33	72	B	UL3398	AWG 26	10,000	6.15×10⁻⁶	4500	6×10^⁶	0.007	0.016	0.01	0.131
April 11, 2011	4	1.2	DC24	8	0.33	72	B	UL3398	AWG 26	10,000	6.15×10⁻⁶	4500	6×10^⁶	0.007	0.016	0.01	0.131
May 13, 2011	5	2.4	DC24	10	0.42	58	B	UL3398	AWG22	10,000	9.08×10⁻⁶	9000	9×10^⁶	0.01	0.023	0.012	0.2
May 12, 2011	5	2.4	DC24	10	0.42	58	B	UL3398	AWG22	10,000	1.38×10⁻⁵	9000	9×10^⁶	0.01	0.023	0.012	0.215
May 11, 2011	5	2.4	DC24	10	0.42	58	B	UL3398	AWG22	10,000	1.38×10⁻⁵	9000	9×10^⁶	0.01	0.023	0.012	0.215

The dynamic friction torque Td is the value at a relative speed of 100 min⁻¹. Additionally, depending on the initial torque characteristics, a break-in period may be required.
Keep fluctuations in the supply voltage within ±10% of the coil voltage. Also, ensure that the duty cycle does not exceed 80%.
The moment of inertia and mass of the rotating section are based on the maximum bore diameter.

[Dimensions] 112 x □ x 13

三木プーリの励磁作動形ブレーキ112モデル（3型）フランジ取り付け形（壁面取り付け用）寸法図取付寸法および主要部寸法を示す寸法図

Size	Radial dimensions												Axial dimensions								CAD File No.
Size	A₁	A₂	A₃	C₁	C₂	C₃	C₄	S	V₁	V₂	V₃	Z	H	K	J₁	J₂	L	P	X	a
02	28	19.5	10.5	39	33.5	11.4	11	－	2-2.1	2–5.3	2-3.7	4–90°	13.7	1.5	2.6	1.3	16.1	5	0.8	0.1	112–131
03	32	23	12.5	45	38	13.6	13	33	3.26	3-6	3-4.5	6–60°	17	2	3.3	1.3	19.3	6.7	1.2	0.15	112–132
04	40	30	18.5	54	47	20	19	41	3-3.1	3-6	3-5	6–60°	20	2	3.3	1.3	22.7	7.2	1.6	0.15	112–133
05	50	38	25.5	65	58	27.2	26	51	3–3.1	3-6.5	3–6	6–60°	22	2	3.5	1.5	25.2	8.2	1.5	0.2	112–134

Size 02 features a round flange.
For information regarding installation methods, please refer to the design specifications.

[Dimensions] 112-□-12

三木プーリの励磁作動形ブレーキ112モデル（2型）フランジ取り付け形（壁面取り付け用）寸法図取付寸法および主要部寸法を示す寸法図

Unit [mm]

Size	Radial dimensions						Axial Dimensions								CAD File No.
Size	A₁	C₁	C₂	C₃	C₄	S	H	K	J₁	J₂	L	P	U	a
02	28	39	33.5	11.4	11	－	13.7	1.5	2.6	1.3	18.1	5	7	0.1	112–121
03	32	45	38	13.6	13	33	17	2	3.3	1.3	21.3	6.7	10	0.15	112–122
04	40	54	47	20	19	41	20	2	3.3	1.3	25.4	7.2	12	0.15	112–123
05	50	65	58	27.2	26	51	22	2	3.5	1.5	28.2	8.2	12	0.2	112–124

Unit [mm]

Size	Shaft bore dimensions
	d H7	Compliant with JIS standards		Compliant with Old JIS Standards
	d H7	b P9	t	b P9	t
02	5	－	－	－	－
03	6	2–^0.006–0_.031	0.8 ^{+ 0.3}₀	－	－
04	8	2–^0.006–0_.031	0.8 ^{+ 0.3}₀	－	－
04	10	3–^0.006–0_.031	1.2 ^{+ 0.3}₀	4 ^{+ 0.050} _{+ 0.020}	1.5 ^{+ 0.5}₀
05	10	3–^0.006–0_.031	1.2 ^{+ 0.3}₀	4 ^{+ 0.050} _{+ 0.020}	1.5 ^{+ 0.5}₀
05	15	5–^0.012–0_.042	2 ^{+ 0.5}₀	5 ^{+ 0.050} _{+ 0.020}	2 ^{+ 0.5}₀

Size 02 features a round flange.
The Size 02 armature hub does not have a keyway. Please secure it to the shaft by press-fitting or a similar method.
For information regarding installation methods and other details, please refer to the design specifications.

[Dimensions] 112-□-11

三木プーリの励磁作動形ブレーキ112モデル（1型）フランジ取り付け形（壁面取り付け用）寸法図取付寸法および主要部寸法を示す寸法図

Unit [mm]

Size	Radial dimensions								Axial dimensions										CAD File No.
Size	A₁	A₂	C₁	C₂	C₃	C₄	S	m	H	K	J₁	J₂	L₁	L₂	P	U	T	a
02	28	9.5	39	33.5	11.4	11	－	M3	13.7	1.5	2.6	1.3	23.1	18.1	5	7	2.5	0.1	112-111
03	32	12	45	38	13.6	13	33	2-M3	17	2	3.3	1.3	29.3	21.3	6.7	10	4	0.15	112-112
04	40	17	54	47	20	19	41	2-M3	20	2	3.3	1.3	34.7	25.4	7.2	12	5	0.15	112–113
05	50	24	65	58	27.2	26	51	2-M4	22	2	3.5	1.5	37.2	28.2	8.2	12	5	0.2	112–114

Unit [mm]

Size	Shaft Bore Dimensions
	d H7	Compliant with JIS standards		Compliant with Old JIS Standards
	d H7	b P9	t	b P9	t
02	5	－	－	－	－
03	6	2–^0.006–0_.031	0.8 ^{+ 0.3}₀	－	－
04	8	2–^0.006–0_.031	0.8 ^{+ 0.3}₀	－	－
04	10	3–^0.006–0_.031	1.2 ^{+ 0.3}₀	4 ^{+ 0.050} _{+ 0.020}	1.5 ^{+ 0.5}₀
05	10	3–^0.006–0_.031	1.2 ^{+ 0.3}₀	4 ^{+ 0.050} _{+ 0.020}	1.5 ^{+ 0.5}₀
05	15	5–^0.012–0_.042	2 ^{+ 0.5}₀	5 ^{+ 0.050} _{+ 0.020}	2 ^{+ 0.5}₀

Size 02 features a round flange.
For information regarding installation methods and other details, please refer to the design specifications.

三木プーリの112モデル（1/2/3型）励磁作動形ブレーキフランジ取り付け形（壁面取り付け用）ご注文時の型式構成説明図