Product Capability Fit
Inverted planetary screws, micro screw sets, standard planetary screws, and actuator components for robotics, EMA, servo press, and high-end R&D programs.
Inverted planetary roller screw manufacturing
Custom Inverted Roller Screws for Compact Actuator Programs
Manufacturing support for long internally threaded nuts, smooth output shafts, matched roller sets, and actuator-ready screw packages. Send your OD, lead, stroke, load, preload, material, and quantity targets for a practical DFM review.
- Geometry
- OD, lead, stroke, nut length
- Loads
- Dynamic/static force, duty cycle
- Release
- Inspection report and CoC needs
Inverted layout
Long internal nut, smooth output shaft, compact envelope.
Review output
DFM notes, risk list, sample plan, inspection scope.
What Buyers Can Evaluate Quickly
Capability, customization, quality, and delivery in one review path
The homepage now focuses on the decisions procurement and engineering teams need before opening a serious RFQ.
Custom Geometry Scope
Review OD, lead, stroke, nut length, shaft ends, flange features, preload, backlash, material, heat treatment, coating, and sealing requirements before quotation.
Quality Release Evidence
Define required checks for material certificate, heat number, hardness, roughness, lead accuracy, backlash or axial play, torque, runout, and CoC.
Sample-to-Batch Path
Move from drawing or sample review into DFM, prototype machining, first-article inspection, EVT/DVT/PVT support, and small-batch ramp planning.
RFQ Starting Windows
Use these as feasibility prompts, not fixed catalog limits
Custom roller screw programs are reviewed against geometry, load, duty cycle, inspection scope, and delivery stage.
8-100 mm
Typical Custom Diameter Review
1-20 mm
Common Lead Feasibility Range
2-5 days
DFM Feedback After Complete Data
Buyer review map
Start With the Decision Points That Slow RFQs Down
Most custom screw projects do not fail because buyers ask for the wrong catalog part. They stall because the actuator envelope, inspection evidence, prototype gate, and batch-release path are unclear. Use these entry points to move the discussion quickly.
Step 1
Pick Product Family
Start from architecture fit, target operating window, and interface assumptions before entering RFQ.
Step 2
Validate by Use Case
Confirm your architecture against application duty, thermal envelope, and integration constraints before sample planning.
Step 3
Verify Delivery & Scale
Review our prototyping timelines, sample acceptance evidence, and mass-production delivery governance.
Typical applications
Built Around Compact High-Load Actuator Problems
The homepage should make it obvious where inverted roller screws create value: short axial packages, high load density, shock-load resistance, and inspection evidence that lets an engineering team approve samples with less guesswork.
Humanoid joint actuators
Knee, ankle, elbow, wrist, and compact linear joints
Buyer checks
High thrust density, shock-load margin, low backlash
Dexterous hand and micro motion
Finger-scale screws, gripper modules, surgical mechanisms
Buyer checks
Small OD, clean motion, torque and noise control
Compact electromechanical actuators
Servo cylinders, aerospace EMA, hydraulic replacement
Buyer checks
Envelope, heat, sealing, bearings, and duty cycle
Precision Actuator Series
Compare product families by architecture fit, packaging constraints, inspection evidence, and quote readiness.
Inverted Planetary Roller Screw
Compact RVI architecture with a long internally threaded nut, smooth output shaft, and high load density for space-constrained electric actuators.
View specs
Micro Inverted Roller Screw
Miniature inverted roller screw sets for robotic fingers, dexterous hands, surgical mechanisms, and compact precision modules.
View specs
Standard Planetary Roller Screw
High-load planetary roller screw assemblies for servo presses, hydraulic replacement axes, test rigs, and heavy industrial motion.
View specs
Inverted Roller Screw Actuator
Compact electromechanical actuator architecture built around an inverted roller screw, frameless motor envelope, and push-tube integration.
View specs
Custom Roller Screw Manufacturing
Drawing-based manufacturing for proprietary inverted roller screw shafts, long nuts, rollers, and compact actuator screw sets.
View specs
Precision Roller Screw Components
Internally threaded nuts, screw shafts, rollers, timing rings, end machining, and assembly support for roller screw programs.
View specsProduct Selection Snapshot for Buyers
This quick matrix helps cross-functional teams compare major options before opening a detailed RFQ thread.
| Family | Best Fit | Key Metric | Why It Matters |
|---|---|---|---|
| Inverted Planetary Roller Screw | Robotics, aerospace, and compact EMA teams that need high thrust in a short linear package rather than a catalog ball screw. | Custom Diameter Window: Approx. 8-100 mm project-dependent | Defines whether the inverted layout can fit humanoid joints, compact EMA tubes, or heavier industrial axes. |
| Micro Inverted Roller Screw | Micro-robotics, dexterous hand, and medical device teams replacing miniature ball screws or custom lead screws. | Outer Diameter: Approx. 4-12 mm custom feasibility range | Crucial for multi-finger packaging where every millimeter changes motor and tendon layout. |
| Standard Planetary Roller Screw | Machine builders and automation teams replacing hydraulic cylinders or undersized ball screws in high-force axes. | Thrust Force: Project-sized from load/life inputs | High force alone is not enough; equivalent load, stroke, speed, and duty cycle determine practical screw size. |
| Inverted Roller Screw Actuator | Actuator OEMs and system integrators designing compact EMA modules around proprietary motor and housing constraints. | System Efficiency: Up to 80% | Reduces battery drain in mobile/aerospace applications. |
| Custom Roller Screw Manufacturing | Engineering teams with proprietary actuator geometry rather than catalog part numbers. | DFM Turnaround: 2-5 business days after complete data | Reduces quote loops before machining custom screw geometry. |
| Precision Roller Screw Components | Actuator builders sourcing critical roller screw parts or validating a custom assembly supply chain. | Component Scope: Nut / shaft / roller / ring / assembled set | Lets buyers source only the precision component blocking their actuator program. |
Customization range
Define the Screw Around Your Actuator Envelope
Many inverted roller screw buyers already have proprietary housing, motor, bearing, and push-tube constraints. The useful conversation is not a generic part-number list. It is a controlled review of geometry, load, material, and inspection tradeoffs.
Geometry and envelope
OD, lead, stroke, nut length, shaft length, retracted length, and motor or housing clearance.
Actuator interfaces
Shaft ends, journals, splines, flats, flanges, bearing seats, push-tube details, and rotor mounting features.
Motion targets
Dynamic/static load, speed, acceleration, duty cycle, backlash, preload, stiffness, and back-drivability.
Materials and surface control
Alloy or stainless steel, heat treatment, hardness range, coating, corrosion control, lubrication, and sealing.
Quality control
Inspection Gates Buyers Can Put Into a Purchase Spec
The strongest homepage proof is a clear release process: drawing control, material traceability, measured thread quality, and batch documentation. These are the checkpoints we expect to clarify before samples are approved.
Open quality page1
Drawing baseline
Confirm drawing revision, STEP/sample availability, datum scheme, CTQ dimensions, and inspection expectations.
2
Material and heat treatment
Lock material grade, heat number traceability, hardness target, coating, and any corrosion or cleanliness needs.
3
Thread and matched-set control
Review internal thread grinding, lead accuracy, roughness, runout, preload/backlash, torque, and roller matching.
4
Release package
Define FAI report, dimensional data, hardness record, lead report, backlash/axial play check, MTR, and CoC.
Lead time and scale-up
Sample to Batch Without Losing the Engineering Baseline
Lead time depends on geometry, heat treatment, inspection scope, and project stage. The practical goal is to freeze what matters early so samples, EVT/DVT feedback, and small-batch releases use the same acceptance logic.
01
DFM review
2-5 business days after complete OD, lead, stroke, load, duty, drawing, and quantity data.
02
Prototype sample
Manufacture first samples against a frozen drawing baseline and agreed acceptance checks.
03
EVT/DVT/PVT support
Use inspection and actuator-fit feedback to adjust geometry, preload, materials, and process controls.
04
Small-batch ramp
Move accepted samples into controlled lots with repeatable inspection records and delivery milestones.
Knowledge Base
Latest Engineering Guides
Practical buyer-side checklists, decision frameworks, and technical insights for compact actuator and roller screw sourcing teams.
Factory Insights
The Manufacturing Process of Inverted Roller Screws: Why Internal Thread Grinding Matters
Go behind the scenes at our factory to understand the complexities of internal thread grinding and why it dictates the quality of inverted roller screws.
Product Engineering
How to Select the Right Inverted Roller Screw for Humanoid Robot Joints
A comprehensive sizing and selection guide for robotics engineers integrating inverted roller screws into bipedal humanoid actuators.
Product Engineering
Inverted Planetary Roller Screw vs. Ball Screw: Which is Better for High-Load Actuators?
A detailed engineering comparison between inverted planetary roller screws and traditional ball screws for heavy-duty and compact robotic applications.
FAQ
RFQ and Procurement Support
Include These Parameters for a Useful First Reply
A complete first email lets engineering review feasibility, identify missing constraints, and avoid a vague price-only exchange.
- Screw type: inverted, standard planetary, actuator screw set, or component
- Target OD, lead, stroke, nut length, shaft length, and overall envelope
- Dynamic/static load, speed, acceleration, duty cycle, and life target
- Backlash, preload, stiffness, positioning accuracy, or torque target
- Material, heat treatment, coating, corrosion, sealing, and lubrication needs
- Quantity stage: prototype, EVT, DVT, PVT, small batch, or production
- Drawing, STEP, sample, revision baseline, and delivery country
Before quotation
- Architecture fit: inverted vs standard planetary
- Manufacturability check for long internally threaded nuts
- Risk notes for heat treatment, preload, lubrication, and sealing
During sampling
- First-article inspection and CTQ report planning
- Matched nut, shaft, roller, and timing-ring review
- Actuator packaging feedback for bearings and motor interfaces
Before batch release
- Lot traceability, MTR, hardness, lead, and backlash records
- Packaging, export documentation, and delivery milestone planning
- Change-control baseline for drawings and acceptance criteria
Start Your RFQ
Share your specs and procurement timeline to receive engineering feedback and quotation support.
Inquiry Email
Include target OD, lead, stroke, load, quantity, and delivery country.
WhatsApp Engineering
+8618857971991
Best for quick RFQ clarification and drawing-review coordination.