Stepper 34H20 series

Product overview
The Size 34 (86 mm / NEMA 34) 2-phase hybrid rotary stepper motor series. Models 34H2060, 34H2075 and 34H2098 cover shaft lengths and current ratings for holding torque up to 7.0 N·m. Encoders, planetary gearbox solutions and a DC24V power-off brake are available as factory options.

General parameters
Step angle: 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 load (5 mm from mounting surface): 600 N
Permissible radial load (10 mm): 550 N
Permissible radial load (15 mm): 480 N
Permissible radial load (20 mm): 390 N

Electrical & mechanical parameters (per model)
Type | Current (A RMS) | Resistance (Ω) | Inductance (mH) | Holding torque (N·m) | Rotor inertia (g·cm²) | Length (mm) | Mass (g)
34H2060 | 3.0 | 1.0 | 6.0 | 3.0 | 1100 | 60 | 1600
34H2075 | 4.5 | 0.6 | 4.5 | 4.5 | 1800 | 75 | 2100
34H2098 | 6.0 | 0.5 | 3.5 | 7.0 | 2800 | 98 | 2900

Materials
End bell: aluminum alloy
Bearing: deep groove ball bearing
Magnet: sintered NdFeB
Shaft: stainless steel
Wiring: UL 3265, 18 AWG

Dimensional drawings & performance
Dimension drawings and model-specific dimension charts for Size 34 (86 mm) are provided for installation. Speed/torque curves are available for 34H2060-300, 34H2075-450 and 34H2098-600 to support system selection and motor sizing.

Options — Encoder
Resolution (CPR):

• 64, 100, 200, 500, 1000, 1800, 2000, 2500, 3600, 4000, 5000, 7200, 8000, 10000

Output types: single-ended and differential outputs supported; consult product page for available output codes.

Options — Planetary gearbox (86 mm frame)
Housing material: metal
No-load backlash: first stage 15 arcmin, second stage 25 arcmin
Bearing: ball bearing
Example gear ratios and specs:
Single-stage ratios 3, 4, 5, 7 — rated torque 50 N·m, limit torque 100 N·m, stages 1, efficiency ≈95%, length 89 mm, mass ≈2080 g
Two-stage ratios 16, 20, 25, 28, 35, 40, 50 — rated torque 80 N·m, limit torque 160 N·m, stages 2, efficiency ≈90%, length 112 mm, mass ≈2830 g

Options — Power-off brake (Size 34)
Rated voltage: DC 24 V ±5%
Resistance: 69 Ω ±10%
Power: 12 W
Holding torque: >6 N·m
Insulation class: B
Insulation resistance: >100 MΩ (DC 500 V)
Dielectric strength: AC 1000 V for 1 s
Retraction time: 50 ms
Release time: 50 ms
Gyration gap: 1°
Emergency brake cycles: 200 cycles
Lifetime: 500,000 cycles
Noise level: <60 dB

Key features / technical summary

• Series: 34 series (Size 34, 86 mm / NEMA 34)
• Step angle: 1.8° ±5%
• Holding torque: up to 7.0 N·m (model dependent)
• Available models: 34H2060, 34H2075, 34H2098 with model-specific electrical/mechanical data
• Optional accessories: encoders (multiple CPR options), planetary gearbox (multiple ratios), power-off brake (24 V DC)
• Provided documentation: dimension drawings, speed/torque curves, option specifications