RV Series High-Performance Folded Stepper Motor Rotation Stages

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Overview

The RV Series steel rotation stages combine high precision positioning and extremely high load capacities to operate in a large variety of conditions for scientific and industrial applications. Four stage sizes and two folded stepper motor configurations are available, as is a vacuum compatible version. A folded motor may provide the RV stage with a more desirable footprint in certain systems. For applications requiring the highest torque, the BPE stepper motor version is recommended. Also, open-loop stepper motors can be a lower cost alternative to certain closed-loop DC servo systems.

Ideal for high load applications with up to 6500 N load and torque capacity of 80 N·m
Folded motor may provide a more desirable footprint in certain systems
All steel, single monolithic construction offers high stiffness and thermal stability
Double row preloaded ball bearings allow for high off-center loads in a reduced footprint
Precision ground and hardened worm gear with self-compensating preload
Lower cost alternative to certain closed-loop DC servo systems

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Products

Compare	Model	Compatibility	sortOrder	rankScore		Maximum Speed	Maximum Torque	Bi-directional Repeatability, Typical	Accuracy, Typical	Centered Load Capacity	Availability	Price	Brand
RV120BPP-F Motorized Rotation Stage, 120 mm, High-Torque Mini-Step Drive, Folded $8,906 7 Weeks	RV120BPP-F Motorized Rotation Stage, 120 mm, High-Torque Mini-Step Drive, Folded	UNIVERSAL	440.0	1.0	1.0	20°/s	15 N·m	±0.7 mdeg	±4.0 mdeg	1800 N	7 Weeks	$8,906	Newport
RV120BPE-F Motorized Rotation Stage, 120 mm, High-Torque Full-Step Drive, Folded $10,506 7 Weeks	RV120BPE-F Motorized Rotation Stage, 120 mm, High-Torque Full-Step Drive, Folded	IMPERIAL	0.0	1.0	2.0	2°/s	20 N·m	±0.7 mdeg	±4.0 mdeg	1800 N	7 Weeks	$10,506	Newport
RV160BPP-F Motorized Rotation Stage, 160 mm, High-Torque Mini-Step Drive, Folded $11,083 7 Weeks	RV160BPP-F Motorized Rotation Stage, 160 mm, High-Torque Mini-Step Drive, Folded	UNIVERSAL	270.0	1.0	3.0	20°/s	20 N·m	±0.7 mdeg	±4.0 mdeg	2700 N	7 Weeks	$11,083	Newport
RV160BPE-F Motorized Rotation Stage, 160 mm, High-Torque Full-Step Drive, Folded $12,600 7 Weeks	RV160BPE-F Motorized Rotation Stage, 160 mm, High-Torque Full-Step Drive, Folded	UNIVERSAL	310.0	1.0	4.0	2°/s	35 N·m	±0.7 mdeg	±4.0 mdeg	2700 N	7 Weeks	$12,600	Newport
RV240BPP-F Motorized Rotation Stage, 240 mm, High-Torque Mini-Step Drive, Folded $13,217 7 Weeks	RV240BPP-F Motorized Rotation Stage, 240 mm, High-Torque Mini-Step Drive, Folded	UNIVERSAL	140.0	1.0	5.0	20°/s	22 N·m	±0.6 mdeg	±3.5 mdeg	4000 N	7 Weeks	$13,217	Newport
RV240BPE-F Motorized Rotation Stage, 240 mm, High-Torque Full-Step Drive, Folded $16,157 7 Weeks	RV240BPE-F Motorized Rotation Stage, 240 mm, High-Torque Full-Step Drive, Folded	UNIVERSAL	170.0	1.0	6.0	2°/s	60 N·m	±0.6 mdeg	±3.5 mdeg	4000 N	7 Weeks	$16,157	Newport
RV350BPP-F Motorized Rotation Stage, 350 mm, High-Torque Mini-Step Drive, Folded $19,402 12 Weeks	RV350BPP-F Motorized Rotation Stage, 350 mm, High-Torque Mini-Step Drive, Folded	UNIVERSAL	40.0	1.0	7.0	20°/s	25 N·m	±0.6 mdeg	±3.5 mdeg	6500 N	12 Weeks	$19,402	Newport
RV350BPE-F Motorized Rotation Stage, 350 mm, High-Torque Full-Step Drive, Folded $21,537 12 Weeks	RV350BPE-F Motorized Rotation Stage, 350 mm, High-Torque Full-Step Drive, Folded	UNIVERSAL	20.0	1.0	8.0	2°/s	80 N·m	±0.6 mdeg	±3.5 mdeg	6500 N	12 Weeks	$21,537	Newport

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Notes:

Non-folded version and DC Motor version are also available.

Specifications

Angular Range

360°
Minimum Incremental Motion

1.0 mdeg
Drive Mechanism

Ground worm gear with self compensating preload
Bearings

Double row ball bearings
Worm Gear Ratio

1:90

Origin

Optical
Limit Switches

Optical, at ± 170°, can be disabled for continuous rotation
Feedback

Worm-mounted rotary encoder
Base Material

Stainless Steel
Cable Length

3 m

Specifications

Angular Range

360°
Minimum Incremental Motion

1.0 mdeg
Drive Mechanism

Ground worm gear with self compensating preload
Bearings

Double row ball bearings
Worm Gear Ratio

1:90

Origin

Optical
Limit Switches

Optical, at ± 170°, can be disabled for continuous rotation
Feedback

Worm-mounted rotary encoder
Base Material

Stainless Steel
Cable Length

3 m

Features

Steel Construction

The tool steel construction ensures enhanced rotation accuracy due to the ground bearing surfaces. The single monolithic design offers improved stiffness and thermal stability without compromising dynamic performance.

Highest Load Capacity

The double row of preloaded ball bearings allows for higher off center loads for its small footprint. The largest member of the RV stepper motor product family can bear up to 650 kg or rotate up to 20 °/s while maintaining eccentricity of less than 4 µm.

Full-Step and Mini-Step Stepper Motors

Full-step (BPE and PE) and mini-step (BPP) versions of the RV stepper motor stages are available. The full-step version is equipped with a reduction gear to obtain higher torque and is primarily designed for applications requiring the direct positioning accuracy to be maintained to within the stage's mechanical resolution when power is switched off. The mini-step versions offer a 1/10-step per encoder count, enabling speed of up to 20°/sec. These stages feature a worm-mounted rotary encoder for improved accuracy and repeatability and to detect motor stalling.

Vacuum Compatible Versions

Vacuum compatible verions of the RV series full-step stepper motor stages are available. They can be used in vacuum environment down to 10^-6 hPa. Check out our vacuum products brochure for more information. Contact us today to discuss your application requirements.

Configurable Limit Switches

Most of the RV models are designed with optical limit switches to limit movement to 170°. These can be enabled or disabled for complete 360° motion with a simple "Allen" wrench.

Metrology Report Included at No Additional Cost

Newport guarantees specification values which are measured and recorded following ASME B5.57 and ISO 230-2 standards. The typical performance values are two times better than the guaranteed specifications.

RV Load Characteristics - Horizontal Configuration

RV Load Characteristics - Vertical Configration