Rodless belt actuator
Thomson WH (SPEEDLINE) linear units
Belt-driven, wheel-guided rodless linear modules for very fast, high-acceleration transfer axes, with stainless washdown versions and a WHZ vertical-axis variant.
Key specifications
| Temperature | 0–80 °C |
|---|---|
| Force (max) | 5,000 N |
| Stroke (max) | 11,000 mm |
| Linear speed (max) | 10,000 mm/s |
| Screw type | toothed belt drive (wheel guide) |
| Repeatability | 0.05 mm |
| Sizes | WH50: Fx 670 N; stroke 3,000 mm; 6.5 m/s; 40 m/s2, WH80: Fx 2,700 N; stroke 11,000 mm; 10 m/s; 40 m/s2, WH120: Fx 5,000 N; stroke 11,000 mm; 10 m/s; 40 m/s2 |
Summarised in our own words from Regal Rexnord's published data; series maxima, individual models vary. Last checked 2026-10-29. Source 1 · Source 2 · Source 3
Notes on this data
Metric values used; speed converted m/s to mm/s. Page's imperial columns are inconsistent (e.g. 11,000 mm shown as 78.7 in; 670 N as 71 lbf) and appear copied across sizes, so imperial was ignored. WH40 not listed. Fy/Fz: WH50 415/730 N, WH80 882/2,100 N, WH120 4,980/9,300 N. IP rating not stated.
Specify Motion is not affiliated with Regal Rexnord. Thomson and WH (SPEEDLINE) linear units are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
Typical applications
Alternatives that meet or exceed these figures
Engineers often come to us with a Thomson part number and leave with an alternative that is easier to source, quicker to deliver or a better fit for the machine. These 3 series from our supply network are the closest match on published figures.
Wide steel-cord urethane belt version of the B3 rodless actuator for long, fast strokes up to 14.6 m and 5 m/s with integral bearing guidance.
| Published maximum | WH (SPEEDLINE) linear units | B3W Belt-Drive Rodless |
|---|---|---|
| Force | 5,000 N | 1,446 N |
| Stroke | 11,000 mm | 14,579 mm meets or exceeds |
| Speed | 10,000 mm/s | 5,080 mm/s |
Economical rodless screw actuator derived from the BC2 band cylinder, with solid-bearing rods and a stainless band seal for light to moderate loads.
| Published maximum | WH (SPEEDLINE) linear units | BCS Rodless Screw (BCS/MCS) |
|---|---|---|
| Force | 5,000 N | 11,700 N meets or exceeds |
| Stroke | 11,000 mm | 3,048 mm |
| Speed | 10,000 mm/s | — |
Screw-driven rodless actuator in six sizes, with a solid-bearing (S) or profiled-rail (P) carrier for moderate to heavy guided loads.
| Published maximum | WH (SPEEDLINE) linear units | MXE Screw-Drive Rodless (MXE-S / MXE-P) |
|---|---|---|
| Force | 5,000 N | 19,127 N meets or exceeds |
| Stroke | 11,000 mm | 3,411 mm |
| Speed | 10,000 mm/s | — |
Figures are the highest published for each series and are not always measured the same way. A higher figure is not automatically a better choice: mounting, duty cycle, feedback, connectors and approvals matter too. An engineer will check the fit against your application before recommending anything.
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