Fine-lead, high-stiffness roller screw designs for precision positioning and demanding actuator programs.
Evaluate this family when the machine needs fine travel resolution, high axial stiffness, or hydraulic-cylinder replacement loads while keeping electromechanical control. It is less about minimum diameter and more about stiffness, life, and controlled motion under demanding duty cycles.
Confirm whether the application values resolution and stiffness more than high linear speed before selecting a fine lead.
Risk if missed: A fine lead can overload speed and thermal assumptions if the motion profile was based on a faster ball screw.
Define fixed/free support condition, unsupported length, orientation, and maximum compression load.
Risk if missed: The screw may meet load rating but fail column stability or bearing life requirements.
Include pressure, cycle rate, ambient temperature, contamination, and maintenance interval in the RFQ.
Risk if missed: Heavy-duty performance depends on lubrication delivery and heat control, not load rating alone.
| Metric | Typical Range | Why It Matters |
|---|---|---|
| Load Capacity | Fine lead with high axial stiffness | Supports precise micro-positioning while retaining roller screw load density. |
| Model | Nominal Dia (d0, mm) | Lead (mm) | Dynamic Load (Ca, kN) | Static Load (C0a, kN) | Max Force (kN) | Max Stroke (mm) |
|---|---|---|---|---|---|---|
| HSR-3005 | 30.0 | 5.0 | 120.0 | 250.0 | 80 | 1200 |
| HSR-3910 | 39.0 | 10.0 | 185.0 | 410.0 | 140 | 1500 |
| HSR-4812 | 48.0 | 12.0 | 290.0 | 680.0 | 220 | 2000 |
| HSR-6415 | 64.0 | 15.0 | 480.0 | 1150.0 | 380 | 2500 |
| HSR-8020 | 80.0 | 20.0 | 750.0 | 1850.0 | 600 | 3000 |
| HSR-12030 | 120.0 | 30.0 | 1650.0 | 4200.0 | 1400 | 4500 |
| Capability | Evidence | Buyer Value |
|---|---|---|
| High-stiffness nut and roller matching | Matched component inspection, preload torque record, and axial stiffness or displacement test plan. | Shows the assembly is tuned as a system rather than sold as loose machined parts. |
| Heavy-load material and heat treatment | Material certificate, case depth or hardness report, and batch heat-treatment record. | Supports buyer-side failure mode review for press, actuator, or long-life automation programs. |
| Application sizing support | Buckling, critical speed, life, and lubrication assumptions documented in the quote response. | Helps procurement compare total engineering fit instead of only quoted dynamic load. |
Step 1
Load, speed, buckling, support-bearing, and duty-cycle risk review for the chosen lead and diameter.
Acceptance: No unresolved critical-speed, buckling, or lubrication blockers remain before quotation.
Step 2
Sample set with inspection report, preload data, surface finish, and initial motion test recommendation.
Acceptance: Measured stiffness, running torque, and positioning repeatability meet the machine target.
Step 3
Batch inspection plan with material traceability, heat treatment, and final acceptance criteria.
Acceptance: Buyer approves control plan for repeat orders and supplier quality onboarding.
A roller screw can provide materially higher load density and fatigue-life margin than a ball screw in the same envelope, but the final advantage depends on diameter, lead, preload, lubrication, and duty cycle.
Choose recirculating when the application needs very fine travel resolution and high stiffness in a diameter range where a standard planetary lead would be too coarse.
Inquiry Email
Please include screw type, diameter, lead, stroke, load, drawings, STEP files, and quantity timeline.
NDA signing supported prior to drawing uploads.
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