SP+ planetary gearbox

  • SP+ planetary gearbox with output shaft
  • SP+ planetary gearbox with RMS pinion

  • Advanced Linear System with SPplanetary gearbox 
  • SP+ planetary gearbox with splined shaft

  • Motor mounting alpha Advanced Line / alpha Premium Line Planetary gearboxes

  • SP+ planetary gearbox with metal bellows coupling
  • SP+ planetary gearbox in corrosion-resistant design

The classic all-rounder

The standard version of these low-backlash planetary gearboxes with output shaft is ideally suited for high positioning accuracy and highly dynamic cyclic operation. The SP+ HIGH SPEED is particularly well suited for applications with maximum speeds during continuous operation.



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  • Technical data
  • Options
Version MFMCMC-L
Operating mode Cyclic operationContinuous operationContinuous operation
Ratio c) 3 - 1003 - 1003 -10
Number of sizes 765

Max. backlash c)

jt [arcmin]Standard

≤ 3

≤ 1


≤ 4

≤ 2


≤ 4

≤ 2

Max. torqueT2a [Nm]48 - 570068 - 3600180 - 3600
Max. input speedn1Max [rpm]850060006000
Torsional rigidityCt21 [Nm/arcmin]550550550
Max. tilting momentM2KMax [Nm]50005000310

c) In relation to reference sizes

Product typeSP+SP+ HIGH SPEEDSP+ HIGH SPEED reibungsoptimiert
Output shape   
Smooth shaft
Shaft with key d)
Splined shaft (DIN 5480)
Blind hollow shaft
Input shape   
Self-contained version  


Flange with slotted holes  
ATEX (2014/34/EU) a) 
Food-grade lubrication a) b)
Corrosion resistant a) b)
Optimized mass inertia a)
System solutions   
Linear system (rack / pinion) 
Servo actuator  
Accessory (please refer to the product pages for further information)   
Shrink disc

a) Performance reduction: Technical data available on request

b) Please contact WITTENSTEIN alpha

d) Performance reduction: Please use our sizing software cymex® for a detailed sizing

Product highlights

Consistently high performance

Constant backlash throughout the service life of the gearbox ensures a consistently high performance.

Low maintenance

Highest quality standards guarantee a long service life and extend maintenance intervals.


High speeds increase machine output.

Positioning accuracy

Minimal backlash and extreme rigidity ensure maximum positioning accuracy at the tool center point.


Extremely reliable gearboxes prevent cost-intensive machine breakdowns. 

WITTENSTEIN alpha in all axes

Low backlash planetary gearboxes

WITTENSTEIN alpha develops complete, single-supplier solutions for any driving axis. They can be used in virtually any application – from high-precision axes in manufacturing systems to packaging machinery where maximum productivity is required. 
The name WITTENSTEIN alpha is a byword for premium quality and reliability, high precision and synchronization accuracy, highest power density, a long lifetime and very simple motor mounting.