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Custom Double Output Speed Reducers


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PEM’s double output gearboxes are designed for long life in applications when a high AGMA service factor is needed. Typically the units are designed with a 2.0 intermittent load factor and a 3.5 stall torque. Any input and output configuration can be designed with any mounting and material of construction you may require. We have designed and produced units with as much as 500 hp and 200,000 lb-ft of torque.

Any gearbox has the option of using our trademarked gear tooth design we call Megagears. The Megagear allows for up to 33% more torque than a gear of the same diameter with a typical tooth design. We can even retrofit our Megagears into your existing box by another manufacturer. All of our gears are cut from 8620 steel, case hardened, and ground to finish.

As a standard, we make our shafts from 4140 steel for superior strength and our cases are designed with a vertical split rather than a horizontal split across the bearings. By doing this we eliminate torsional stress of the case which improves the life of the bearings and gears to a L10 rating. Every gearbox design is calculated with an intermittent torque rating of 2 ½ to 4 times (depending on what is required) the continuous torque and then put through a FEA (Finite Element Analysis) prior to construction. After final assembly every gearbox is given a 100% spin test before it’s shipped to ensure that you will receive a gearbox of the highest caliber.

Read below for more information on our double output speed reducer design and manufacturing capability. Please note that this information describes what we’ve already designed and built, not what our limitations are. If any of your requirements exceed the ranges specified below, do not hesitate to contact our engineering department.



I/O · Specifications · Options · Company

I/O

Ratio

1:6 to 1:225

Input

Solid Input Shaft - Flanged, Splined, Keyed

No. of Inputs

Up to 2

Input Horsepower

20 to 500 hp

Output Interface

Solid - Flanged, Splined, Keyed

No. of Outputs

2

Specifications

Gears

All gearboxes are modeled in proprietary FEA software to precisely apportion power to certain gears, per the customer's requirements.
Mega Gearing (30% more HP)
Standard Gearing (8620 - other materials available)

Shafts

Standard Shafting is 4140, other materials available
Up to 8 RMS finish

Chassis/Housing

Ductile Iron or Weldments (A36)

Size Range

1,500 lbs to 40,000 lbs
Largest - 13' x 4' x 6'
Smallest 2' x '3' x 4'

Service Factor

4

Options

Finishing Options

Priming
Painting
Military Spec Painting

Mounting Options

Custom Mounting Hardware
Foot-mounted
Horizontal
Inline
Shaftmount
Vertical

Value-Added Options

External lube oil systems
Outside washdown system
Proximity sensors
Temperature sensors
Torque sensors
Viscosity sensors

Cooling

Fins (heatsinks)
Forced air (fans)
Oil-jacketed housings
Water-jacketed housings

Company

Order Quantity

Single-quantity/prototype orders to small lots of ~500 pieces

Typical Lead Time

8 Weeks ARO

Quality Assurance

100% part inspection on CMM (Coordinate Measuring Machine)
30% load test (100% load tests available on request)
5-Hour/0% Load Test
Noise testing upon request
Vibration testing upon request

Compliances

Meet or exceed AGMA Standards

Maintenance

Field service is offered for all installations (even international)

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