Inline Cycloidal Gearboxes

cycloidal_reducersER 3000 Series variants, Circulute product family

The Circulute 3000 and our related products that utilize cycloidal gearing technology deliver the most robust solution in the most compact footprint. The main power train is comprised of an eccentric roller bearing that drives a wheel around a set of internal pins, keeping the reduction high and the rotational inertia low. The wheel incorporates a curved tooth profile instead of the more traditional involute tooth profile, which removes shear forces at any point of contact. This design introduces compression forces, instead of those shear forces that would exist with an involute gear mesh. That provides a number of performance benefits such as high shock load capacity (>500% of rating), minimal friction and wear, lower mechanical service factors, among many others. The cycloidal design also has a large output shaft bearing span, which provides exceptional overhung load capabilities without requiring any additional expensive components.

Cycloidal advantages over other styles of gearing;

  • Capable of handling larger “shock” loads (>500%) of rating compared to worm, helical, etc.
  • High reduction ratios and torque density in a compact dimensional footprint
  • Exceptional “built-in” overhung load carrying capability
  • High efficiency (>95%) per reduction stage
  • Minimal reflected inertia to motor for longer service life
  • Just ridiculously rugged as all get-out

The overall Circulute design proves to be extremely durable, and it requires minimal maintenance following installation. The Circulute is the most dependable reducer in the industrial marketplace, and it is a perfect fit for applications in heavy industry such as oil & gas, primary and secondary steel processing, industrial food production, metal cutting and forming machinery, wastewater treatment, extrusion equipment, among others.

Circulute Technology: Operating Principles | Product FeaturesMounting Examples

3000 Series, Summary Level Table

Product Series Input Power Range C-Face Input Range
[if flange mount]
Reduction Ratios
3000 Series, Standard
Cycloidal gearbox
Industrial duty for induction motors
Various mount options
er_s Minimum:
1/8 HP (.1 kW)
Maximum:
60 HP (45 kW)
Smallest: 56C
Largest: 280TC
Also IEC flanges
Minimum: 11:1
Maximum: 357,911:1
3000 Series, DI Option
Cycloidal gearbox
Industrial duty for induction motors
Various mount options
er_di_s Minimum:
1/8 HP (.1 kW)
Maximum:
39 HP (29 kW)
Smallest: 56C
Largest: 280TC
Also IEC flanges
Minimum: 11:1
Maximum: 357,911:1
3000 Series, Servo
Cycloidal gearbox
Servo motor mount
Higher precision rating
erk_s Minimum:
1.92 HP (1.4 kW)
Maximum:
36 HP (26.9 kW)
Not applicable Minimum: 11:1
Maximum: 71:1
3000 Series, Pulley
Cycloidal gearboxIndustrial duty for induction motors
Pulley, Hollow and solid shaft styles
pulley_s Minimum:
2.3 HP (1.7 kW)
Maximum:
20.4 HP (15.2 kW)
Smallest: 56C
Largest: 250TC
Minimum: 11:1
Maximum: 71:1
3000 Series, Overhead
Cycloidal gearbox
Aka, the “Chicken Drive”
Special bearing design for load handling
er_overhead_s Minimum:
1.6 HP (1.2 kW)
Maximum:
5.9 HP (4.4 kW)
Smallest: 140TC
Largest: 180TC
Minimum: 121:1
Maximum: 187:1
3000 Series, Custom OEM Products
Cycloidal gearbox
Servo motor mount
Higher precision rating
er_custom_s Minimum:
1/8 HP (.1 kW)
Maximum:
5.9 HP (4.4 kW)
Not applicable Minimum: 33:1
Maximum: 5751:1