Shaft Designs


- Solid shaft with key
- Solid shaft without key
Bearing Design


- Normal bearings
- Reinforced bearings for higher axial load capacity (option)
- Reinforced bearings for higher radial load capacity (option)
Mounting Positions


- Any mounting position.
- You can find the explanation of the mounting positions and the respective quantities of lubricant in the document Quantity of lubricant for gear units ID 441871
Lubricants and Maintenance


- Synthetic lubricant CLP HC ISO VG 150
- Lubricated for life
- Maintenance-free
Paint Finish


Black RAL 9005
Motor Adapter ME


- Universal motor mounting system for almost all synchronous servo motors. 
- Option large (MEL) for large motors.
- Fast and secure motor mounting.
- Robust, balanced coupling. 
- Thermal length compensation.
- Low mass inertia.
EasyAdapt
Option ServoStop


- Integrated in the motor adapter, electrically released spring-loaded brake. 
- When the power is removed, in the event of a power failure or an emergency stop ServoStop will brake both drive and machine shaft safely and reliably. 
- Zero-backlash plug-in coupling.


Recommendation Motor
EZ synchronous servo motors 
For further information see Synchronous Servo Motors

Type	Ratio	Max. perm. acceleration torque [Nm]	Max. perm. input speed in cyclic operation [1/min]	Backlash [arcmin]	Torsional stiffness [Nm/arcmin]
P521_K1_	12 – 280	200 – 300	4500 – 6000	4 – 5	22 – 26
P721_K1_	28 – 561	407 – 650	4500 – 6000	3.5 – 4	46 – 47
P721_K2_	12 – 278	271 – 700	4000 – 5500	4 – 4.5	35 – 47
P821_K2_	28 – 555	632 – 1400	4000 – 5500	3.5	125 – 134
P821_K3_	12 – 279	677 – 1600	3800 – 5000	4 – 4.5	79 – 132
P921_K4_	28 – 485	2196 – 2700