Ball screw linear module 17E2 series

single-axis

Overview
The Size 17 (42 mm) external stepper ball screw linear actuator converts rotary motion to linear motion for precise positioning in industrial applications. Various screw-end machining, encoder options (EK1/EK2) and an optional power-off brake for Size 17 motors are available.

Motor Characteristics (table)
Model No. | Rated Voltage [V] | Current [A (RMS)] | Resistance [Ω] | Inductance [mH] | Lead Wire No. | Motor Length "L" [mm]
17E2110 | 3.8 | 1.0 | 3.8 | 5 | 4 | 34.1
17E2115 | 2.78 | 1.5 | 1.85 | 2.2 | 4 | 34.1
17E2212 | 4.56 | 1.2 | 3.8 | 8 | 4 | 48.1
17E2225 | 2.5 | 2.5 | 1.0 | 1.8 | 4 | 48.1

Ball Screw Specification (table)
Ball screw type: 0801 | 0802 | 0805 | 0808 | 0810
Ball Size: Ф0.8 | Ф1.5875 | Ф1.5875 | Ф1.5875 | Ф1.5875
Number of thread: 1 | 1 | 1 | 2 | 2
Thread direction: Right (all types)
Shaft root dia.: Ф7.3 | Ф6.6 | Ф6.6 | Ф6.7 | Ф6.7
Number of circuit: 3.7×1 | 3.7×1 | 2.7×1 | 1.6×2 | 1.6×2
Shaft, nut material: SCM415H (all types)
Surface hardness: HRC58~62 (all types)
Anti-rust treatment: Anti-rust oil (all types)
Grade: C7 (all types)

Nut size / Load (table)
Nut size | A | B | C | D | H | W | X | E | Axial play (mm) | Dynamic load [N] | Static load [N]
BS0801 | 27 | 4 | 16 | 14 | 18 | 21 | 3.4 | | ≤0.02 | 780 | 1650
BS0802 | 27 | 4 | 16 | 14 | 18 | 21 | 3.4 | | ≤0.02 | 1300 | 2300
BS0805 | 31 | 4 | 28 | 18 | 20 | 25 | 3.4 | | ≤0.02 | 1850 | 3000
BS0808 | 31 | 4 | 21.5 | 18 | 20 | 25 | 3.4 | 6 | ≤0.02 | 2200 | 3800
BS0810 | 31 | 4 | 24 | 18 | 20 | 25 | 3.4 | 7 | ≤0.02 | 2200 | 3900

Dimensional Drawings
External actuator dimensional drawings and product images are provided for mounting and integration reference (external actuator image; external actuator dimension drawing).

Speed Thrust Curves
Single-stack and double-stack speed–thrust curve plots are available for the 42 mm size to guide performance selection.

Test Condition
Testing voltage: 24 Vdc. Driver model: DS-OLS2-FPD bipolar chopper driver at rated current (RMS). Motor thrust varies with supply voltage and driver; a 50% thrust margin is recommended for reliable operation.

Options

• Screw end machining (multiple end shapes available)
• Encoder option: EK1 and EK2 (multiple CPR resolutions, single-ended and differential outputs)
• Power-off brake (available for Size 17 motor)

Encoder Option — EK1 (table)
Resolution (CPR): 100 | 108 | 120 | 125 | 128 | 200 | 250 | 256 | 300 | 360 | 400 | 500 | 1000 | 512 | 720 | 800
Single-ended output codes: 0–15 corresponding to listed CPR options
Differential outputs: A–P corresponding to available differential options

Encoder Option — EK2 (table)
Resolution (CPR): 50 | 100 | 192 | 200 | 250 | 256 | 360 | 400 | 500 | 720 | 900 | 1000 | 1250 | 2000 | 2500 | 4000 | 5000
Single-ended output codes: 0–12 corresponding to listed CPR options
Differential outputs: A–Q corresponding to available differential options

Power-Off Brake (Parameters)
Rated voltage: DC 24 V ±5%
Resistance: 145 Ω ±10%
Power: 5 W
Hold torque: >0.8 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 cycle: 200 cycles
Lifetime: 500,000 cycles
Noise level: <60 dB

Technical specifications / Features

• Product family: Size 17 (42 mm) external stepper ball screw linear actuators
• Motor models and electrical data: see Motor Characteristics table (17E2110, 17E2115, 17E2212, 17E2225)
• Ball screw types: 0801, 0802, 0805, 0808, 0810 — ball sizes and shaft root diameters as listed above
• Nut types and loads: BS0801–BS0810 — axial play ≤0.02 mm for listed nuts; dynamic/static loads shown above
• Encoder options: EK1 and EK2 with multiple CPR resolutions and single-ended/differential outputs
• Optional power-off brake for Size 17: DC24V, 5W, hold torque >0.8 N·m, lifetime 500,000 cycles
• Speed–thrust performance: single and double stack curves available; test condition: 24 Vdc with DS-OLS2-FPD bipolar chopper driver
• Materials: shaft and nut material SCM415H; surface hardness HRC58–62; anti-rust oil treatment; ball screw grade C7