Planetary gearbox
WITTENSTEIN alpha alpha LP+ / LPB+
alpha Value Line compact planetary gearbox for linear and belt drives; current listings show LPB+ Generation 3.
Key specifications
| Peak torque (max) | 305 Nm |
|---|---|
| Speed (max) | 6,000 rpm |
| Ratio | 3–100:1 |
| Backlash (max) | 8 arcmin |
Summarised in our own words from WITTENSTEIN SE's published data; series maxima, individual models vary. Last checked 2026-10-29. Source 1 · Source 2
Notes on this data
Only LPB+ appears in the coaxial gearbox grid; LP+ is not listed separately. LPB+ page shares an 'LP+ / LPB+' operating manual but does not say LP+ is discontinued or replaced, so status left current. 3 sizes, 37-305 Nm.
Specify Motion is not affiliated with WITTENSTEIN SE. WITTENSTEIN alpha and alpha LP+ / LPB+ 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 WITTENSTEIN alpha 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.
High-rigidity Wanshsin inline planetary with three backlash classes down to super-precision, for machine tools, automation and AGVs.
| Published maximum | alpha LP+ / LPB+ | WSH |
|---|---|---|
| Rated torque | — | 2,400 Nm |
| Peak torque | 305 Nm | 7,200 Nm meets or exceeds |
| Ratio (max) | 100:1 | 100:1 meets or exceeds |
| Backlash (lower is better) | 8 arcmin | 1.5 arcmin meets or exceeds |
Wanshsin inline planetary designed for high radial loads, offered in three precision classes.
| Published maximum | alpha LP+ / LPB+ | WTH |
|---|---|---|
| Rated torque | — | 2,050 Nm |
| Peak torque | 305 Nm | 6,150 Nm meets or exceeds |
| Ratio (max) | 100:1 | 100:1 meets or exceeds |
| Backlash (lower is better) | 8 arcmin | 1.5 arcmin meets or exceeds |
Right-angle version of the high-rigidity WSH, with a spiral bevel stage and ratios up to 200:1.
| Published maximum | alpha LP+ / LPB+ | WSHR |
|---|---|---|
| Rated torque | — | 1,400 Nm |
| Peak torque | 305 Nm | 4,200 Nm meets or exceeds |
| Ratio (max) | 100:1 | 200:1 meets or exceeds |
| Backlash (lower is better) | 8 arcmin | 4 arcmin meets or exceeds |
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.
Other planetary gearbox series
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