Stepper 14H20 series

Overview
The size 14 [35 mm] Hybrid Rotary Stepper Motor provides up to 0.4 N·m of holding torque. Encoders and 32 mm frame planetary gearbox solutions are available.

Parameters (General)
Accuracy | Step angle: 1.8° ±5%
Resistance: ±10% @ 20 °C
Inductance: ±20% @ 1 kHz
Insulation class: B
Duty type: S1
Dielectric strength: 500 VAC / 1 KHz / 1 mA / 1 s
Insulation resistance: 100 MΩ / 500 VDC
Permissible radial load (5 mm from mounting surface): 50 N | (10 mm): 40 N | (15 mm): 25 N | (20 mm): 20 N

Electrical / Mechanical Parameters (per type)
Type | Current (A [RMS]) | Resistance (Ω) | Inductance (mH) | Holding Torque (N·m) | Rotor Inertia (g·cm²) | Length (mm) | Mass (g)
14H2027 | 0.5 | 10.3 | 5.9 | 0.1 | 12 | 26.5 | 150
14H2037 | 1.5 | 1.7 | 1.4 | 0.2 | 20 | 37.25 | 210
14H2052 | 1.5 | 2.7 | 2.8 | 0.4 | 35 | 53.5 | 250

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

Dimensional Drawing
Dimensional drawings and dimension images available for Size 14 (35 mm).

Torque Performance Curves
Torque performance curves available for: 14H2027-050, 14H2037-150, 14H2052-150.

Options
Encoder Option (EK1)
Resolution (CPR): 100, 108, 120, 125, 128, 200, 250, 256, 300, 360, 400, 500, 512, 720, 800, 1000
Single ended output mapping (example): 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15

Encoder Option (EK2)
Resolution (CPR): 50, 100, 192, 200, 250, 256, 360, 400, 500, 720, 900, 1000, 1250, 2000, 2500, 4000, 5000
Single ended output mapping (example): 0,1,2,3,4,5,6,7,8,9,10,11,12

Planetary Gearbox (32 mm frame option)
House material: Metal
No load backlash: 1°
Bearing: Ball bearing
Example gearbox data (ratio groups):
Ratios 3.3 / 4.6 | Rated torque: 0.5 N·m | Limit torque: 1.5 N·m | Stages: 1 | Efficiency: 90% | Length: 16.2 mm | Mass: 90 g
Ratios 11.2 / 15.5 / 21.5 | Rated torque: 1 N·m | Limit torque: 3 N·m | Stages: 2 | Efficiency: 81% | Length: 21.9 mm | Mass: 115 g
Ratios 37.7 / 72 | Rated torque: 2.5 N·m | Limit torque: 7.5 N·m | Stages: 3 | Efficiency: 73% | Length: 27.7 mm | Mass: 140 g

Power-Off Brake (Available for Size 14 Motor)
Rated voltage: DC 24V ± 5%
Resistance: 217Ω ± 10%
Power: 4W
Hold torque: >0.3 N·m
Insulation: B
Insulation resistance: >100 MΩ (DC 500V)
Dielectric strength: AC 1000V for 1 s
Retraction time: 50 ms | Release time: 50 ms
Gyration gap: 1°
Emergency brake cycle: 200 cycles
Lifetime: 500,000 cycles
Noise level: <60 dB

Characteristics / Technical specifications

• Product family: 2-phase hybrid rotary stepper motor, Size 14 (35 mm)
• Maximum holding torque (page): 0.4 N·m
• Available types: 14H2027, 14H2037, 14H2052 (see electrical/mechanical parameters above)
• Encoder options: EK1 and EK2 with multiple CPR resolutions (see encoder tables above)
• Optional planetary gearbox (32 mm frame) with multiple gear ratios and torque classes
• Optional power-off brake parameters listed above
• Materials: end bell aluminum alloy, deep groove ball bearings, sintered NdFeB magnet, stainless steel shaft
• Wiring standard: UL 3265, 26 AWG