Precision Spiral Bevel Gearboxes

Quick Facts
- CT is 100% stainless steel and the CTB series is standard steel
- High-torque, low-backlash right-angle gearboxes
- Backlash from 6 arc minutes
- Flexible design accommodates multiple shaft options
- Metric and NEMA motor adaptors for virtually any type of motor
- Ratios from 1:1 up to 500:1 with planetary stages
- 2-year product warranty
Product Overview
These right-angle gearboxes feature precision, ground spiral bevel gear sets for applications that require accuracy and repeatability. This series is available in combination with planetary stages to achieve ratios up to 500:1. Motor adaptor housings are also available to mount a variety of metric and NEMA motors.
Precision Spiral Bevel Gearboxes | Frame Sizes | Output Torque | Ratios 1-Stage |
Ratios 2-Stage |
Ratios 3-Stage |
Backlash 1-Stage (arc-min) |
Backlash 2-Stage (arc-min) |
Backlash 3-Stage (arc-min) |
![]() CT/ CTB |
9: 65mm – 280mm | 12 Nm – 3200 Nm | 1, 1.5, 2, 3, 4, 5 Bevel Only | – | – | <6 | – | – |
![]() CTB-FL |
9: NEMA 23, 34, 42, 56, 75, Metric 60, 90, 115, 142mm | 9 Nm – 423 Nm | 1,1.5, 2, 3, 4, 5 | 7, 10, 15, 20, 25, 35, 50 | 70, 100, 125, 150, 200, 250, 350, 500 | <6 | <8 | <10 |
MULTIPLE GEARBOX CONFIGURATIONS

CT-L/-L1/-R1

CT-FL/-FL1/-FR1

CT-H/-C

CT-FH/-FC

CT-4M/-LM/-RM

CTB-L/-L1/-R1

CTB-FL/-FL1/-FR1

CTB-H/-C

ATB-FH/-FC

CTB-4M/-LM/-RM
Design Highlights
