X-RST Series

High load motorized rotary stages with built-in controllers

Series Specifications

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Accuracy (unidirectional) 0.075 – 0.16°
Repeatability < 0.0015 – < 0.005°
Backlash < 0.05° (< 0.873 mrad)
Radial Error Motion +/- 2.5 – +/- 3 µm
Axial Error Motion < 3 – < 4 µm
Tilt Error Motion +/- 0.0014 – +/- 0.003°
Microstep Size (Default Resolution) 0.00015625 – 0.00027574°
Default Resolution 1/64 of a step
Maximum Torque 10 – 70 N⋅m
Maximum Continuous Torque 10 – 45 N⋅m
Maximum Centered Load 500 – 3000 N
Maximum Moment (Tilt) 20 – 200 N⋅m
Stiffness (Tilt) 870 – 8000 N⋅m/°
Maximum Speed 24 – 60°/s
Minimum Speed 0.000095 – 0.000168°/s
Speed Resolution 0.000095 – 0.000168°/s
Maximum Angular Momentum 0.4 kg⋅m2 – 1.6 kg⋅m2/s
Angular Motion Per Motor Rev 2 – 3.5294°
Motor Steps Per Rev 200
Motor Type Stepper (2 phase)
Motor Rated Current 1500 – 3000 mA/phase
Motor Winding Inductance 2 – 6.6 mH/phase
Motor Frame Size 17 – 23
Gear Ratio Varies
Communication Interface RS-232
Communication Protocol Zaber ASCII (Default), Zaber Binary
Data Cable Connection Locking 4-pin M8
Power Supply 24-48 VDC
Power Plug 2-pin Screw Terminal
Maximum Current Draw 1100 – 3600 mA
Stage Top Dimension 120 – 240 mm
Bearing Plane Offset 27.1 – 30.75 mm
Guide Type Varies
Mechanical Drive System Precision Worm Gear
Mounting Interface Varies

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X-RSTRotation Stage Diameter: 120, not selectedWorm Gear Ratio: A, not selectedTop Mounting Option: K, not selected
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Rotation Stage Diameter

Worm Gear Ratio

Top Mounting Option

Part Specifications Comparison

Part NumberWeightAccuracy (unidirectional)RepeatabilityRadial Error MotionAxial Error MotionTilt Error MotionMicrostep Size (Default Resolution)Maximum TorqueMaximum Continuous TorqueMaximum Centered LoadMaximum Moment (Tilt)Stiffness (Tilt)Maximum SpeedMinimum SpeedSpeed ResolutionMaximum Angular MomentumAngular Motion Per Motor RevMotor Rated CurrentMotor Winding InductanceMotor Frame SizeGear RatioMaximum Current DrawStage Top DimensionBearing Plane OffsetGuide TypeMounting Interface
X-RST120AK2.6 kg (5.732 lb)0.16° (2.792 mrad)< 0.005° (< 0.087 mrad)+/- 3 µm (+/- 0.000118")< 3 µm (< 0.000118")+/- 0.0014° (+/- 24.43 µrad)0.00015625° (2.727 µrad)10 N⋅m (7.38 lb⋅ft)10 N⋅m (7.38 lb⋅ft)500 N (112.1 lb)20 N⋅m (14.76 lb⋅ft)870 N⋅m/° (20.1 µrad/N⋅m)24°/s (4 rpm)0.000095°/s (1.658 µrad/s)0.000095°/s (1.658 µrad/s)0.4 kg⋅m2/s1500 mA/phase6.6 mH/phase17180:11100 mA120 mm (4.724")27.1 mm (1.067")Preloaded Ball BearingKinematic with M2.5 and M6 threaded holes
X-RST240B14.5 kg (31.967 lb)0.075° (1.30875 mrad)< 0.0015° (< 0.026 mrad)+/- 2.5 µm (+/- 0.000098")< 4 µm (< 0.000157")+/- 0.003° (+/- 52.36 µrad)0.00027574° (4.812 µrad)70 N⋅m (51.66 lb⋅ft)45 N⋅m (33.21 lb⋅ft)3000 N (672.8 lb)200 N⋅m (147.6 lb⋅ft)8000 N⋅m/° (2.2 µrad/N⋅m)60°/s (10 rpm)0.000168°/s (2.932 µrad/s)0.000168°/s (2.932 µrad/s)1.6 kg⋅m2/s3.5294°3000 mA/phase2 mH/phase23102:13600 mA240 mm (9.449")30.75 mm (1.211")Crossed-Roller BearingM6 threaded holes and M8 mounting holes

Specification Charts & Notes

Thrust or torque is a function of speed. The values given above are maximums. These values cannot both be achieved simultaneously (i.e. at maximum speed, the unit will not produce maximum thrust).

Torque Speed Performance

X-RST120AK-torque-speed-web
Torque Speed Performance Chart of the X-RST240B