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Your benefits

Precise performance
Guaranteed peak power for demanding users.

Flexible
Seamless integration and adaptability to your individual needs.

Reliable
Long-term power rating and minimised maintenance requirements thanks to integrated lubrication for life and robust design.

Space-saving and powerful
Maximum power rating with minimum space requirements, for more freedom in the design of your systems.

Servo cycloidal gear unit ZN.. - Compact, precise, powerful

Our ZN.. servo cycloidal gear units epitomise the material to be conveyed by modern drive technology. With their unique combination of precision, power rating and modularity, they set new standards in the industry. These modern drive systems are reliable partners for your most demanding projects. Whether you work in the food industry and require fast and precise positioning of your production lines, work in robotics and need to realise extremely precise motion sequences, or want to implement demanding applications with minimal vibrations in medical technology - our ZN.. cycloidal gear units offer you the optimum solution.

Thanks to their compact design, dynamic performance and modular construction, they can be seamlessly integrated into your existing systems and customised to your individual requirements. The mechanical freedom from backlash and the high torsional and tilting rigidity of these gear units are particularly noteworthy. With their robust design and fast startup, they are the perfect choice for demanding applications in a wide range of industries. Our gear units are lubricated for life ex works, ready for installation and available in up to twelve sizes.

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Any gear unit-motor combination from the modular design

The MD adapter combines the advantages of a direct motor attachment with the benefits of an adapter attachment. Despite its enormous compactness, the MD adapter offers positive torque transmission as well as the option of simply replacing the CM3C servomotor.

The HN adapter provides a variety of different possible motor mounting dimensions for even more flexible motor mounting by the customer. Mounting is non-positive via a clamping coupling. The ZN.. cycloidal gear unit from SEW-EURODRIVE is optimised for operation on the servo inverters of the MOVI-C® modular automation system. The modular attachment via the MD and HN adapters complements the existing ZN... servo cycloidal gearmotors. CMP... in direct motor mounting.

ZN.. servo gear unit

  • Backlash-free servo gear unit
  • two-stage cycloidal gear unit
  • designed for acceleration torques between 612 Nm and 17500 Nm (36 750 Nm with direct motor mounting)
  • Lubrication for life ex works
  • 5-fold permissible shock load
  • High power density
  • Mechanical freedom from backlash
  • Low mass moments of inertia
  • High positioning accuracy
  • gear unit can be used as main bearing
Gear unit type servomotor Gear ratio i Denominator torques Ma_N
(5 min-1)
Nm
Peak torque Ma_pk
Nm
Emergency stop torque Ma_es
Nm
Torsional stiffness Ctr
NM/arcmin
Tilting rigidity Cpr
NM/arcmin
Hysteresis losses γ
arcmin
Maximum permissible dynamic breakdown torque Mk_dyn
Nm
ZNBF30 to ZNBF130 / ZEBF140 CMP(Z)..* 41-249 341 - 20460 612 - 36750 1225 - 73500 61 - 6320 530 - 19800 < 1,0 784 - 44000
ZNBF30 to ZNBF130 / ZEBF140 CM. 41-249 573 - 20460 1029 - 36750 2058 - 73500 113 - 6320 530 - 19800 < 1,0 1660 - 44000
ZNBF31 to ZNBF121 CM3C 41-249 341 - 9733 612 - 17500 1225 - 35000 61 - 2600 530 - 9000 < 1,0 784 - 15000
ZNBF31 to ZNBF121 CMP(Z)..* 41-249 341 - 9733 612 - 17500 1225 - 35000 61 - 2600 530 - 9000 < 1,0 784 - 15000

*CMPZ... is available in sizes 71 - 100.

Areas of application Application examples
Food and beverage industry Palletizers and layer pad inserters
Sheet metal and wood processing Joinery machines, planing machines etc.
Milling heads, portals etc.
Industrial handling technology Rotary indexing and positioning tables
Robotics industry Painting, welding, mounting and service robots
medical technology Imaging processes