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GBX-Series Gearbox


The GBX servo gearbox family is designed for direct connection to ORMEC servomotors. It is a high precision, low backlash servo gearbox for industrial motion control applications.

The GBX-AB-Series and the cost effective GBX-AE-Series are helical planetary gearboxes. They are designed for continuous (S1) or cyclic (S5) duty operation. Both the GBX-AB and GBX-AE families have inline shafts and right angle models.

Delivery from stock in two weeks.

Key Features

  • Five Year Warranty!
  • Stainless steel construction
  • Mount in any position: Synthetic gear grease
  • 7 Frame sizes: from 42 mm - 235 mm
  • Other models available for drop-in replacement of competitor products
  • Output torque: 14 Nm - 2000 Nm (124 in-lb – 17,700 in-lb)
  • High Input speeds up to 10,000 RPM (depending on application)
  • Easy mount: Standard Metric and Nema frames with simple mounting adapters
  • Low noise: 56 dB - 74 dB, depending on model

GBX-AB Series Gearbox


Ratios:1-stage: 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10
2-stage: 15/20/25/30/35/40/45/50/60/70/80/90/100
Low backlash:1-stage: <1, <3, <5 arc-min
2-stage: <3, <5, <7 arc-min

Sizes available: 42 mm through 220 mm


Same features and sizes as the GBX-AB but with a right angle spiral bevel gear added.

Ratios: 3 thru 200
Low backlash: 

1-stage: <2, <4, <6 arc-min
2-stage: <4, <7, <9 arc-min

GBX-AE Series Gearbox


Cost effective
Ratios:1-stage: 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10
2-stage: 15/20/25/30/35/40/45/50/
Medium backlash:1-stage: <8 arc-min
2-stage: <12 arc-min

Sizes available: 50 mm through 235 mm


Same features and sizes as the GBX-AE but with a right angle spiral bevel gear added.

Ratios: 3 thru 200
Backlash: 1-stage: <10 arc-min
2-stage: <14 arc-min
*The APEX servo gearboxes are designed for direct attachment to popular servomotors. The power is transmitted from the motor to sun gear. The sun gear drives three planet gears, which are contained within an internal toothed ring gear. The planet gears are mounted on the planet carrier with double wall supports. The planet carrier is part output shaft. When the sun gear rotates, it drives the three planet gears inside the ring gear, and as the planet gears rotate automatically the output shaft rotates.

Due to the load sharing into multiple tooth contacts, the planetary gearbox (gear heads) provides the highest torque and stiffness for a given envelope. The other significant advantages are simple and efficient lubrication and a balanced system at high speeds. The balanced planetary kinematics and the associated load sharing make planetary-type gearboxes ideal for servo applications.

* From www.apexdynamicsusa.com

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