Bearing stepper 11H20

shaftrotorholding

Overview
The Size 11 (28 mm) 2-phase hybrid rotary stepper motor provides up to 0.14 N·m holding torque. Encoders, 28 mm-frame planetary gearboxes and a power-off brake are available as options. Dimensional drawings and torque/speed curves are provided per variant.

General parameters
Step angle (accuracy): 1.8° ±5%
Resistance tolerance: ±10% @ 20 °C
Inductance tolerance: ±20% @ 1 kHz
Insulation class: B
Duty type: S1 (continuous)
Dielectric strength: 500 VAC / 1 kHz / 1 mA / 1 s
Insulation resistance: 100 MΩ / 500 VDC
Permissible radial loads (distance from mounting surface): 5 mm: 50 N; 10 mm: 35 N; 15 mm: 25 N; 20 mm: 20 N

Type-specific parameters
Type | Current (A RMS) | Resistance (Ω) | Inductance (mH) | Holding torque (N·m) | Rotor inertia (g·cm²) | Length (mm) | Mass (g)
11H2033 | 1 | 2.1 | 1.2 | 0.06 | 9 | 33.35 | 110
11H2045 | 1 | 4.1 | 3.2 | 0.1 | 13 | 45 | 200
11H2052 | 1 | 4.7 | 3.9 | 0.14 | 18 | 52 | 280

Materials
End bell: Aluminum alloy
Bearing: Deep groove ball bearing
Magnet: Sintered NdFeB
Shaft: Stainless steel
Wiring: UL 3265, 26 AWG

Dimensional drawing
Variant-specific dimensional drawings and installation images for Size 11 (28 mm) are provided.

Torque performance curves
Torque/speed curves available for 11H2033-100, 11H2045-100 and 11H2052-100.

Options

• Encoder options (examples of available CPR): EK1: 100, 108, 120, 125, 128, 200, 250, 256, 300, 360, 400, 500, 512, 720, 800, 1000; EK2: 50, 100, 192, 200, 250, 256, 360, 400, 500, 720, 900, 1000, 1250, 2000, 2500, 4000, 5000. Single-ended and differential output options available.
• Planetary gearbox (28 mm frame): metal housing, no-load backlash ≈1°, ball bearings. Example ratios and torques: 3.3 — rated 0.5 N·m / limit 1.5 N·m / length 21.2 mm / mass 87 g; 11.2 — rated 1 N·m / limit 3 N·m / length 26.9 mm / mass 91 g; 37.7 — rated 2.5 N·m / limit 7.5 N·m / length 32.7 mm / mass 100 g. Further ratios up to 72 are available.

Power-off brake (Size 11)
Rated voltage: DC 24V ±5%
Resistance: 143.7 Ω ±10%
Power: 5.5 W
Holding torque: >0.3 N·m
Insulation class: B
Insulation resistance: >100 MΩ (DC 500 V)
Dielectric strength: AC 1000 V / 1 s
Pull-in time: 50 ms
Release time: 50 ms
Gyration gap: 1°
Emergency brake cycles: 200 cycles
Lifetime: 500,000 cycles
Noise level: <60 dB

Technical specifications

• Frame size: 28 mm (Size 11)
• Maximum holding torque (highest listed variant): 0.14 N·m
• Step angle: 1.8° ±5%
• Insulation class: B
• Duty type: S1 (continuous)
• Dielectric strength: 500 VAC / 1 kHz / 1 mA / 1 s
• Insulation resistance: 100 MΩ / 500 VDC
• Permissible radial loads: 5 mm: 50 N; 10 mm: 35 N; 15 mm: 25 N; 20 mm: 20 N
• Available types: 11H2033, 11H2045, 11H2052
• Materials: end bell — aluminum alloy; bearing — deep groove ball bearing; magnet — sintered NdFeB; shaft — stainless steel
• Wiring: UL 3265, 26 AWG
• Available options: encoders (EK1/EK2), 28 mm planetary gearboxes, optional power-off brake

For custom windings or special configurations, contact DINGS'.