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ServoFit Precision Planetary Gearheads
The STOBER offering of ServoFit gearheads will enable you to fit all your servo needs. The ServoFit Precision Planetary Gearheads (SPG) are for compact, highly dynamic applications.
Each ServoFit Gearhead Fatures:
• ServoFit Precision Planetary Gearheads fit any servo motor.
• TriAdapt™ motor adapter system makes installation fast and easy - without special tools and gauges.
• Patented shaft clamp system requires no shaft key, reducing weight and minimizing inertia.
• The TriAdapt™ triple split collet clamps firmly to hold a motor shaft tight.
• Aluminum motor plate and input cover for low total weight.
• Every Stober ServoFit Precision Planetary Gearhead is tested three times in 120 degree increments to ensure the lowest standard backlash in the industry.
• HeliCamber™ advanced gear technology yields the highest number of teeth in contact.
• Minimal internal heat build up due to the smallest possible input seal diameters, less surface area/drag, black paint on ductile iron housing, and synthetic oil.
• ServoFit™ precision planetary gearheads are quieter than any planetary or in-line helical gearhead available.
• The totally enclosed, single piece gearcase is sealed per IEC IP65
standards (protected against dust and jets of water in all directions) to
prevent lubrication leakage and contamination for long life.
• FKM seals are standard. Oversized bearings and shafts support high radial
loads and contribute to the high torsional stiffness.
 ServoFit Gearheads Catalog PDF
P Series Planetary Gearheads
The redesign of the "P" Series ServoFit™ Precision Planetary Gearhead makes it more robust and reliable than before. This planetary gearhead is designed to fit where previously only direct drive motor solutions would work. The P Series also
features larger bearings, wider tooth flanks and optimized tooth profile, increased acceleration torque, higher input RPMs, extended emergency torque, three output bearing options, three shaft ratios, and additional binary ratios (8, 16, 32:1).
PA Series Planetary Gearheads
The "PA" Series ServoFit™ Precision Planetary Gearhead has set new standards of excellence for low-backlash helical
planetary gear units. The "PA" can be used for extremely demanding requirements. The PA Series also features reduced backlash (as low as 1 arc minute), hobbed and honed gearing, FlexiAdapt stainless steel bellow coupling, 10% more torsional stiffness, 10% more torque, and additional binary ratios (8, 16, 32:1).
PH & PHA Series Planetary Gearheads
The "PH" Series ServoFit™ Precision Planetary Gearheads are designed for the exacting demands on torsional and tilting rigidity. The " PH" series is well suited where a smooth, precise, reliable drive is needed. The PH Series features an excellent axial load capacity, superior torsional stiffness, case hardened gears (61 Rockwell "C"), oversized tapered roller bearings and shafts, single piece steel housing, blind pilot hole, triple-split collet, interchangable motor plate (for your choice of motors), adapter bushings to fit all motor shafts, and a motor plate pilot toleranced to fit your motor for precise concentricity.
PE Series Planetary Gearheads
The "PE" Series ServoFit™ Precision Planetary Gearheads are available for applications where very low backlash is not a criteria. They are an economical straight tooth planetary, comparable in quality to other Stober units. "PE" Series units are shipped with a motor adapter to fit your specific motor, can be supplied with NEMA output adapters, and have a two year warranty. The PE Series Precision Planetary Gearheads boast 94-96% efficiency with a noise level as low as 60 dB(A). The
PE Series features case hardened gears (61 Rockwell "C"), single piece planet carrier and shaft for more precise alignment
and greater concentricity, triple-split collet, adapter bushings to fit all motor shafts, interchangable motor plate (for your
choice of motors), and a motor plate pilot toleranced to fit your motor for precise concentricity.
PKX Series Planetary Gearheads
The "PKX" Series units are a combination of the "P" Series Precision Planetary Gearhead and a low ratio right angle which
uses the FlexiAdapt® motor coupling. HeliCamber® gear technology provides minimum wear, low backlash, and low noise. "PKX" Series units are lubricated for life with synthetic oil and sealed to IP65 standards to prevent lubricant contamination
for long life. They provide all the great features of the "P" Series unit plus the compact design of a right angle. Some of the features are high torsional stiffness, 93-95% efficiency, a noise level as low as 69 dB(A), magnetic oil filtration, and more.
PHKX Series Planetary Gearheads
The "PHKX" Series combines the "PH" Series ServoFit™ Precision Planetary Gearheads and a right angle to provide a configuration that is a smooth, precise, reliable drive with the benefit of direct mounting to many types of equipment without
a coupling. The output flange dimensions are ISO 9409 and allow easy mounting to rotary or indexing tables, pinions, timing belt pulleys, transmission shafting, etc., without using a coupling. The PHKX Series Precision Planetary Gearheads are
lubricated for life with synthetic oil and sealed to IP65 standards to prevent lubricant contamination for long life. This series
also features high axial load capacity, superior torsional stiffness HeliCCamber gear technology (see above) case hardened gears (61 Rockwell "C"), highly efficient spiral bevel gears, single piece steel housing, and a blind pilot hole.
Contact an ACS Representative for more information.
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