Cotta HS0305 High-Speed Transmission

Model HS0305 is a high speed right angle gearbox that is designed to fit to an existing test stand for attitude testing. The output pad can be rotated in 7 degree 30 minute increments about the input centerline. It has an overspeed ratio and a high accel/decel rate. The gears are spiral bevel and are precision ground. The output bearings are tilting pad journal type. The case is stress relieved fabricated steel.

  • Specifications

    CAPACITY: 300 HP @ 17,500 to 30,000 RPM constant torque below 17,500 RPM.


    RATIO: 1.0 to 2.0

    OUTPUT PAD: AND20007 with the exception that there are 48 holes in place of 12 studs.

    INPUT PAD: AND10267 type XVII with the exception that there are 48 holes in place of 12 holes.

    DIRECTION OF ROTATION: Bi-rotational

    ACCEL/DECEL RATE: 7500 RPM/Sec. Max.

    PITCH RANGE: The gearbox will operate 112.5 degrees above the horizontal. There are 4 scavage ports for multiple pitch operation.

    LUBRICATION: Uses MIL-C-23699. A separate lube system is supplied. Tank is 14.5 X 16.5 X 18.5” in size.

    WEIGHT: 750 lbs. Including the lube system.

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Service done right

Cotta Transmission Service Network

Palmer Johnson's six-location factory-authorized service center network features:

  • Factory-trained technicians
  • Field service
  • Onsite troubleshooting and diagnostics
  • Unit removal and installation

For Cotta Transmission service, call 1-800-341-4334.

Learn more

Madison, WI

Service Center

Service: (608) 834-5206

1835 Haynes Dr
Sun Prairie, WI 53590


Dallas, TX

Service Center

Service: (817) 505-2430

608 112th St
Arlington, TX 76011


Denver, CO

Service Dealer

Service: (720) 724-0033

5151 E 56th Ave
Commerce City, CO 80022


Kansas City, KS

Service Center

Service: (913) 202-6944

15360 South Mahaffie St
Olathe, KS 66062


Los Angeles, CA

Service Center

Service: (562) 356-1590

12020 Bloomfield Ave
Santa Fe Springs, CA 90670


Oklahoma City, OK


Sales: (800) 341-4334

Oklahoma City, OK 73128


Phoenix, AZ

Service Dealer

Service: (602) 253-0214

2401 S. 19th Street
Phoenix, AZ 85034


San Francisco, CA

Service Dealer

Service: (510) 342-2212

1930 W Winton Ave #14
Hayward, CA 94545


St. Louis, MO

Service Center

Service: (636) 203-9811

578 Rudder Rd
Fenton, MO 63026


Philadelphia, PA

Service Dealer

Service: (215) 822-8300

159 Discovery Dr
Colmar, PA 18915


Fort Myers, FL

Service Dealer

Service: (239) 693-7477

4821 Waycross Road
Fort Myers, FL


Vancouver, British Columbia

Service Center

Service: (604) 879-6731

6741 Cariboo Rd Unit 205
Burnaby, British Columbia V3N 4A3


Edmonton, Alberta

Service Center

Service: (780) 434-9578

3804 53rd Ave NW
Edmonton, Alberta T6B 3N7


Seattle, WA

Service Center

Service: (425) 251-3434

1710 136th Ave E
Sumner, WA 98390


RECON Equipment Center, WI

Service Center

Service: (608) 834-5220

1828 Haynes Dr
Sun Prairie, WI 53590

Map of Palmer Johnson Power Systems locations