Planetary servo gear units: PSC

PS.C planetary servo gear units:
cost-effective and flexible
Different and reduced machine performance often requires an adjustment of the drive technology involved. Even so, the highest possible degree of flexibility and cost-effectiveness is to be ensured for the installed products. The new PS.C "competitive" low backlash planetary gear units were developed to fulfill these requirements.

The B5 output variants of the gear unit series are compatible with the successful PS.F planetary servo gear unit series.

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This means a single application can be equipped with different performance levels, with corresponding costs on the customer's side (LOW INVEST). Design modifications of the machine by the customer are not necessary. The same applies, of course, to the PSC output in B14 design, which is equally compatible with the well-established PS.E series.

Another focal point in addition to cost-effectiveness is the flexibility of the system with respect to motor mounting. Synchronous servomotors are available for mounting with an adapter (ECH adapter) in addition to the direct mounting of SEW-EURODRIVE motors to PS.C gear units This means many common motor types can be mounted to the PS.C gear units.

In combination with servomotors, the new PS.C planetary servo gear unit series is the basis for a variety of options to implement flexible, dynamic, and, most of all, cost-effective drive solutions in coaxial design with a compact unit volume and high power density.

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Here too, the tried and tested modular concept enables the combination of planetary gear units and synchronous servomotors. The new PS.C planetary servo gear units are combined directly, which means without adapter, with the dynamic synchronous servomotors of the DS, CM or CMP series from SEW-EURODRIVE.

completely positive
more lightweight
more cost-effective
higher torsional rigidity
shorter
more compact
more dynamic
less mass moment of inertia

The smaller and more lightweight drives make for a compact design of the system. Most importantly, each application is safer thanks to the completely positive connection in the driveline and there is no longer a risk that non-positive connections could become loose. In comparison with a corresponding drive with adapter, the servo gearmotor in direct mounting offers major advantages.

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PS.C gear unit versions

ECH motor adapter	Direct motor mounting
		PS(K)C: B5 flange version with solid shaft or solid shaft and key (K) ECH motor adapter / direct motor mounting Alternative: EPH motor adapter
PS.C ECH	PS(K)C CMP
		PS(K)C/Z: B14 flange version with solid shaft of solid shaft and key (K) ECH motor adapter / direct motor mounting EPH motor adapter
PS.C/Z ECH	PS.C/Z CMP

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Overview of sizes – PS.C

Sizes	Torque M_N [Nm]	Reduction ratio		Circumferential backlash [']
Sizes	Torque M_N [Nm]	1-stage	2-stage	Circumferential backlash [']
PS.C 221	30	3, 5, 7, 10		10 - 15
PS.C 222	30		15, 21, 25, 30, 49, 50, 70, 100
PS.C 321	65	3, 5, 7, 10
PS.C 322	65		15, 21, 25, 30, 49, 50, 70, 100
PS.C 521	160	3, 5, 7, 10
PS.C 522	160		15, 21, 25, 30, 49, 50, 70, 100
PS.C 621	320	5, 7, 10
PS.C 622	320		25, 35, 49, 50, 70, 100