Precision Motorized Linear Stage EPSB-G Series (Stepper with Grating)
Special machining process and anodized surface finish unify precision, wear resistance and appearance.; Ground-grade ball-screw transmission: high efficiency, low starting torque, free of chatter and backlash, high positioning and repeat positioning accuracy.; Precision-grade self-aligning ball linear guide with a light preload assembly process for high load capacity; running parallelism and straightness ≤ 20 µm.; Driven by a standard two-phase stepper motor for high torque and stability.; Equipped with a grating scale and high-precision read head for closed-loop control and higher positioning accuracy.; Two mechanical limit switches provide over-travel speed reduction and limit protection.; One photoelectric zero switch provides precise zero positioning and error correction.; Standard DB9 interface for strong versatility and compatibility with the company’s two-phase stepper motor controllers.
Product Introduction
The EPSB-G series is based on the EPSB precision motorized linear stage and adds a grating scale for closed-loop feedback. It uses high-precision ground ball screws, precision-grade self-aligning ball linear guides and high-quality couplings, a high-torque, high-stability two-phase stepper motor as the power source, and lightweight, high-strength aluminum alloy as the main body material. It offers high precision, strong load capacity, good stability and strong versatility for precision optical experiments, positioning and machining.
Product Features
Special machining process and anodized surface finish unify precision, wear resistance and appearance.; Ground-grade ball-screw transmission: high efficiency, low starting torque, free of chatter and backlash, high positioning and repeat positioning accuracy.; Precision-grade self-aligning ball linear guide with a light preload assembly process for high load capacity; running parallelism and straightness ≤ 20 µm.; Driven by a standard two-phase stepper motor for high torque and stability.; Equipped with a grating scale and high-precision read head for closed-loop control and higher positioning accuracy.; Two mechanical limit switches provide over-travel speed reduction and limit protection.; One photoelectric zero switch provides precise zero positioning and error correction.; Standard DB9 interface for strong versatility and compatibility with the company’s two-phase stepper motor controllers.
Technical Specifications
| Model | EPSB50 | EPSB100 | EPSB150 | EPSB200 | EPSB300 | EPSB400 | ||||||
| Mechanical Specifications | Tabletop Size (mm) | 125X124 | 160X160 | |||||||||
| Travel (mm) | 50 | 100 | 150 | 200 | 300 | 400 | ||||||
| Transmission Mechanism | Precision Ball Screw Ø12×4 | Precision Ball Screw Ø16×4 | ||||||||||
| Guide (Guiding Mechanism) | Linear Slider Guide | |||||||||||
| Body Material & Surface Finish | Aluminum alloy, black anodized | |||||||||||
| Overall Height (mm) | 55mm | 66mm | ||||||||||
| Weight | 3.55 | 3.85 | 4.15 | 4.5 | 9.4 | 10.8 | ||||||
| Coupling (OD-Bore1-Bore2) (mm) | 25-6-5 | 25-10-6.35 | ||||||||||
| Open-Loop Resolution at 1/20 Micro-stepping | 1μm | |||||||||||
| Max Speed (mm/s) | 20 | |||||||||||
| Unidirectional Positioning Accuracy (ref. μm) | ≤10 | ≤15 | ≤20 | ≤25 | ≤35 | ≤45 | ||||||
| Repeat Positioning Accuracy (ref. μm) | ≤±5 | |||||||||||
| Backlash (μm) | ≤5 | |||||||||||
| Static Parallelism (μm) | ≤40 | |||||||||||
| Motion Straightness (μm) | ≤20 | ≤25 | ||||||||||
| Motion Parallelism (μm) | ≤25 | ≤30 | ||||||||||
| Yaw (“) | ≤50 | ≤60 | ||||||||||
| Pitch (“) | ≤50 | ≤60 | ||||||||||
| Electrical Specifications | Motor & Step Angle (°) | 2-phase 42 stepper motor, step angle 1.8° | 2-phase 57 stepper motor, step angle 1.8° | |||||||||
| Motor Brand & Model | Leadshine | |||||||||||
| Operating Current (A) | 2.5 | 4.2 | ||||||||||
| Motor Torque (N·m) | 0.6 | 1.3 | ||||||||||
| Grating Scale Brand | Guiyang Xintian | |||||||||||
| Driver Brand & Model | Leadshine | |||||||||||
| Slide Connector & Grating Scale Connector | Two DB9 (pin) | |||||||||||
| Slide Connector Cable Type | High-Flex Cable | |||||||||||
| Slide Connector Cable Length (m) | 0.4 | |||||||||||
| Limit Sensor (built-in) | OMRON | |||||||||||
| Home Sensor (built-in) | OMRON | |||||||||||
| Sensor Supply Voltage (V) | DC24V ±10% | |||||||||||
| Current Consumption (mV) | Total below 30 mA | |||||||||||
| Control Output | Output: NPN open collector; load supply: DC24V; OFF current: below 0.5 mA; residual voltage: below 0.7 V (at 50 mA load), below 0.4 V (at 5 mA load); | |||||||||||
| Output Logic | Output transistor OFF (cut off) at limit; | |||||||||||
| Load | Horizontal Load | 20kg | 30kg | |||||||||
| Inverted Load | 10kg | 15kg | ||||||||||
| Vertical Load | 10kg | 15kg | ||||||||||
| Matching Z-Axis Adapter Plate Model | OMLB01B | OMLB01B | OMLB02B | OMLB02B | OMLB03B | OMLB03B | ||||||
| Max speed at no load, calculated theoretically and measured at 300 rpm stepper speed. | ||||||||||||
