Electric actuator 23E2 series

linearball screwstepper

Overview
The Size 23 (57 mm) external stepper ball-screw linear actuator. Various screw-end machining options, encoder choices (EK2/EK3) and a power-off brake are available.

Motor Characteristics
Model No. | Rated Voltage [V] | Current [A] [RMS] | Resistance [Ω] | Inductance [mH] | Lead Wire No. | Motor Length L [mm]
23E2120 | 3.5 | 1.5 | 1.75 | 4.1 | 4 | 45
23E2130 | 2.4 | 3 | 0.8 | 1.7 | 4 | 45
23E2225 | 5 | 2.5 | 2 | 5.2 | 4 | 65
23E2240 | 2.8 | 4 | 0.7 | 2 | 4 | 65

Ball Screw Specification
Ball screw types: 1002, 1202, 1205, 1210, 1220
Ball sizes: Ф1.5875, Ф1.5875, Ф2.5, Ф2.381, Ф2.5
Number of threads: 1, 1, 1, 2, 1
Thread direction: Right (all types)
Shaft root diameters: Ф8.6, Ф10.6, Ф10.3, Ф10.2, Ф9.7
Number of circuits: 3.7×1, 3.7×1, 2.8×1, 1.7×2, 1.8×1
Shaft and 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 / Axial play / Loads
Nut size | A | B | C | D | H | W | X | E | Axial play (mm) | Dynamic load [N] | Static load [N]
BS1002 | 34.5 | 5 | 28 | 18 | 22 | 27 | 4.5 | | ≤0.02 | 1450 | 2800
BS1202 | 37 | 5 | 28 | 20 | 24 | 29 | 4.5 | | ≤0.02 | 1600 | 3700
BS1205 | 40 | 10 | 30 | 24 | 30 | 32 | 4.5 | 15 | ≤0.02 | 6610 | 13160
BS1210 | 40 | 10 | 42 | 24 | 30 | 32 | 4.5 | 27 | ≤0.02 | 6420 | 12870
BS1220 | 40 | 5 | 46 | 24 | 24 | 32 | 4.5 | 37 | ≤0.02 | 6700 | 10100

Dimensional Drawings
External actuator images and dimensional drawings are provided for the Size 23 external actuator to aid installation and integration.

Speed Thrust Curves
Single Stack and Double Stack speed-thrust curves are available for the 57 mm (Size 23) actuator. Test condition: Testing Voltage 40 Vdc; Driver Model DS-OLS4-FPD bipolar chopper driver at rated current (RMS). Motor thrust varies with voltage and driver; a 50% thrust margin is recommended.

Options

• Screw end machining (multiple end machining options illustrated).
• Encoder option EK2: available CPR resolutions include 50, 100, 192, 200, 250, 256, 360, 400, 500, 720, 900, 1000, 1250, 2000, 2500, 4000, 5000. Single-ended and differential output mappings are provided.
• Encoder option EK3: available CPR resolutions include 64, 100, 200, 500, 1000, 1800, 2000, 2500, 3600, 4000, 5000, 7200, 8000, 10000. Single-ended and differential output mappings are provided.
• Power-off brake available for Size 23 motors.

Power-off Brake
Rated voltage: DC 24 V ±5% | Resistance: 141 Ω ±10% | Power: 5 W | Hold torque: >2 N·m | Insulation class: B | Insulation resistance: >100 MΩ (DC 500 V) | Dielectric strength: AC 1000 V for 1 s | Pull-in time: 50 ms | Release time: 50 ms | Rotation gap: 1° | Emergency brake cycles: 200 cycles | Lifetime: 500,000 cycles | Noise level: <60 dB.

Technical specifications

• Product family: Stepper ball-screw linear actuators (External), Size 23 (57 mm).
• Available motor models: 23E2120, 23E2130, 23E2225, 23E2240 (see motor table for electrical data and motor lengths).
• Available ball screw types: 1002, 1202, 1205, 1210, 1220 (various ball sizes and shaft root diameters).
• Nut sizes and load ratings: BS1002, BS1202, BS1205, BS1210, BS1220 with axial play ≤0.02 mm and dynamic/static loads as listed.
• Materials: shaft and nut SCM415H; surface hardness HRC58~62; anti-rust oil treatment; grade C7.
• Encoder options: EK2 and EK3 with multiple CPR choices and single-ended/differential outputs.
• Power-off brake: available for Size 23 with specifications listed above.
• Test conditions for speed-thrust curves: 40 Vdc, DS-OLS4-FPD bipolar chopper driver at rated current; allow 50% thrust margin in selection.