Precision Thread Grinding Review
Thread grinding and inspection planning for lead accuracy, surface finish, axial play, and controlled running torque.
Precision Miniature Roller Screw Manufacturing
Micro & Inverted Planetary Roller Screws for Compact Actuators
High-load, ultra-compact screw assemblies for humanoid hands, miniature linear actuators, medical robotics, aerospace mechanisms, and controlled prototype-to-batch programs.
Inquiry Email
Please include screw type, diameter, lead, stroke, load, drawings, STEP files, and quantity timeline.
NDA signing supported prior to drawing uploads.
Instant Chat
+86 18857971991Quick clarification for drawings, sample photos, and lead-time checks. Complete RFQs are usually triaged within one business day.
1.5 mm
Min Screw Diameter
15×
Load vs Ball Screw
MOQ 1
Prototype Order
2 Weeks
Sample Lead Time
Factory Capability Highlights
Engineered for Compact High-Load Programs
Manufacturing and inspection capabilities for compact actuators, robotics, medical-device development, and aerospace mechanism programs.
Compact RVi Integration
Custom inverted nut designs for frameless motor integration, short actuator stacks, and smooth output-shaft packaging.
Traceable Material Routes
100Cr6, GCr15, 440C, stainless, heat-treatment, hardness, and surface-finish routes aligned to buyer specifications.
Auditable QA Records
Material traceability, EN 10204 3.1 MTC options, CMM reports, first-article records, and ISO 2859-1 AQL sampling by scope.
Product Capability
Start with the motion problem, not a catalog part number
Buyers usually need to know whether a supplier can hold the envelope, load, backlash, life, material, and inspection path before they send drawings. These are the first feasibility questions we expect to resolve during RFQ review.
FamilyRangeBuyer Use
Micro RV / planetary screws
1.5-12 mm nominal diameter
High load density for hands, pumps, stages, and compact push rods
Inverted RVi / ISR structures
5-20 mm screw OD targets
Nut-driven actuator packaging with smooth output shafts
Custom shaft and nut sets
Drawing-based ends, flanges, preload, and stroke
Prototype validation before pilot and batch release
Miniature precision threads
Ground or rolled threads, hardened surfaces
Low backlash, controlled torque, and repeatable inspection records
Why Roller Screw
Roller Screw vs Ball Screw vs Lead Screw
Roller screws win when you need higher load capacity in a smaller envelope, longer service life under the same duty cycle, or better shock resistance. Here is how they compare on the metrics that drive actuator selection decisions.
| Performance Dimension | Planetary Roller Screw | Ball Screw | Lead Screw |
|---|---|---|---|
| Load density (same OD) | 3 – 15× higher | Baseline | 0.3 – 0.5× |
| Service life (same load) | 10 – 15× longer | Baseline | 0.1 – 0.3× |
| Stiffness | ★★★★★ | ★★★ | ★★ |
| Compactness | ★★★★★ | ★★★ | ★★★★ |
| Efficiency | 80 – 90% | 85 – 95% | 25 – 50% |
| Shock resistance | ★★★★★ | ★★ | ★★★ |
| Unit cost (same load class) | 1.5 – 3× | Baseline | 0.2 – 0.5× |
When to choose roller screws: Your actuator envelope is too tight for a ball screw of the same load class, your duty cycle demands 10× longer fatigue life, or your application involves shock loads that would damage ball recirculation paths.
Quality Control
Inspection evidence that reduces sourcing risk
For micro roller screws, the hidden risk is not only price. It is material substitution, unstable preload, uncontrolled lead error, and weak documentation. The quality path is visible from RFQ through shipment.
CNC machining cell for precision miniature screw components
Quality inspection setup for roller screw geometry and documentation
Drawing and DFM review
Tolerance stack, load case, buckling, critical speed, shaft-end risk, and manufacturability review before quoting.
Material and heat-treatment control
Material certificate review, hardness checks, surface finish control, and process route definition for fatigue-critical parts.
Thread and geometry inspection
Lead accuracy, axial clearance, friction torque, runout, CMM dimensions, and visual inspection recorded for release.
Export-ready packing and traceability
Part marking, batch records, protective packaging, documentation pack, and shipment coordination for global programs.
Lead Time Path
A practical route from sample request to repeat orders
Engineering buyers care less about a vague fast-delivery claim and more about what happens after a drawing is shared. Each stage below has a practical output that can be reviewed by engineering and procurement.
1. RFQ triage
Usually within one business day
We check the drawing, duty cycle, load target, backlash target, quantity, and risk items before confirming next actions.
2. Engineering alignment
DFM and spec lock
Diameter, lead, nut geometry, material, heat treatment, inspection plan, and sample acceptance criteria are agreed.
3. Sample build
Prototype path
Pilot components are manufactured with inspection records so the actuator team can validate force, torque, life, and fit.
4. Pilot to batch
Controlled release
After sample approval, the process route, QC checkpoints, packaging, and delivery cadence are stabilized for repeat orders.
Product and process visuals
Representative product, machining, and inspection visuals used across the site.
Core Portfolio
Engineered Product Families
Explore our primary roller screw configurations designed to solve specific footprint and load challenges in high-end robotics and aerospace.
Ultra-Micro & Miniature RV
High-precision micro planetary roller screws for very compact spaces.
Inverted Roller Screw (RVi)
Nut-driven inverted design for maximum stroke-to-length ratio.
Recirculating & High-Stiffness Roller Screws
Fine-lead, high-stiffness roller screw designs for precision positioning and demanding actuator programs.
Application Focus
Target Industries & Solutions
Our micro roller screws are integrated into the most demanding, compliance-driven industries where failure is not an option.
Humanoid Robotics & Dexterous Hands
Ultra-compact, impact-resistant actuation for humanoid joints.
Aerospace Mechanisms
High-reliability electromechanical actuators replacing hydraulic systems.
Medical & Surgical Robotics
Traceable miniature motion components for medical-device development and lab automation.
Lab Automation & Precision Positioning
Low-backlash micro linear motion for analyzers, dispensers, optical stages, and compact test fixtures.
Quick Reference
Specs, Pricing & Lead Time
Reference pricing for standard configurations. Custom geometry, special materials, or compliance documentation may adjust the final quote. All programs start at MOQ 1 pc for prototype evaluation.
| Product Family | Diameter | Lead | Dynamic Load | Accuracy | Price Range | Sample Lead Time | MOQ |
|---|---|---|---|---|---|---|---|
| Ultra-Micro RV | 1.5 – 12 mm | 0.5 – 4 mm | 0.5 – 15 kN | P0 – P5 | $15 – $150 | 2 – 3 weeks | 1 pc |
| Inverted RVi / ISR | 5 – 20 mm | 1 – 6 mm | 2 – 25 kN | P3 – P7 | $50 – $350 | 2 – 4 weeks | 1 pc |
| Recirculating / Heavy Duty | 12 – 120 mm | 2 – 20 mm | 10 – 200 kN | P1 – P5 | $80 – $850 | 3 – 5 weeks | 1 pc |
Knowledge Base
Latest Engineering Guides
Practical buyer-side checklists, decision frameworks, and technical insights from our manufacturing engineering team.
EngineeringProcurementProduct Engineering
Navigating PFAS-Free Lubrication for Micro Roller Screws: 2026 Compliance Guide
A comprehensive guide for procurement and engineering teams on transitioning to PFAS-free lubrication for miniature planetary roller screws in high-load, high-temperature applications.
EngineeringProcurement
Dynamic Load Ratings in Micro Roller Screws: How Procurement Can Avoid Over-Engineering
Use dynamic load ratings in micro roller screws to size L10 life, audit supplier data, and avoid costly over-specification in compact actuator RFQs globally.
EngineeringProcurementProduct Engineering
The Hidden Costs of Micro Roller Screw Integration: Specifying Custom End Machining
Specify custom end machining for micro planetary roller screws: RFQ tolerances, runout risks, heat-treatment limits, and when to request factory support.
Interactive Engineering Tools
Stop guessing. Use our interactive L10 Life Calculator to compare theoretical fatigue life between standard ball screws and our planetary roller screws based on your exact dynamic axial load.
FAQ
RFQ and Procurement Support
Start Your RFQ
Share your specs and procurement timeline to receive engineering feedback and quotation support.
Inquiry Email
Please include screw type, diameter, lead, stroke, load, drawings, STEP files, and quantity timeline.
NDA signing supported prior to drawing uploads.
Instant Chat
+86 18857971991Quick clarification for drawings, sample photos, and lead-time checks. Complete RFQs are usually triaged within one business day.