Well Service Transmissions

CX31-P600 Well Service Transmission

Gross Input Power

600 BHP

Gross Peak Input Torque

2,025 ft-lb

Rated Input Speed

2,100 r/min


Your operation depends on the power driving it. And your transmission is as crucial to your power solution as the engine. Cat transmissions are proven in the oil and gas industry and widely known for their exceptional power, leading durability, ease of operation, and shifting options.Ideal applications for Cat CX31-P600 transmissions include workover rigs, kill mud pumps, coil tubing pump support, nitrogen units, acidizing units, and cementing units. CX31-P600 transmissions are optimized for use with C9 ACERT, C11 ACERT, C13 ACERT, C15 ACERT, and C18 ACERT engines (A and B ratings).Cat CX31-P600 oilfield transmission. Gross input power: 447 bkW (600bhp). Configurations available include integral pump drives, integral drop box, and side power take-off.

    Transmission Specifications

    Gross Input Power

    600 BHP

    Gross Peak Input Torque

    2,025 ft-lb

    Rated Input Speed

    2,100 r/min

    Maximum Turbine Torque

    2,600 ft-lb

    Minimum Input Speed

    2,500 r/min

    Retarder Rating

    535 HP

    Retarder Rating Speed

    2,400 r/min

    Gear Type

    Planetary Spur

    Electrical System

    24 V



    1F Gear Ratio


    2F Gear Ratio


    3F Gear Ratio


    4F Gear Ratio


    5F Gear Ratio


    6F Gear Ratio


    1R Gear Ratio


    Overall Gear Ration


    • Cat Engines for Optimized Power Train
      • C9 ACERT, C11 ACERT, C13 ACERT, C15 ACERT, C18 ACERT (A and B ratings)
    • Transmission Rotation
      • Input rotation — counterclockwiseOutput rotation — counterclockwise(as viewed from rear)
    • Torque Converter
      • Lock-up clutch, torque converter drive in all gears integral to transmission
      • Stall torque ratio
    • Clutches
      • Clutches — electro-hydraulic fully modulated, oil cooled, multidisc
      • Clutch modulation control — Cat Electronic Clutch Pressure Control (ECPC)
    • Installation Connections
      • 2 oil cooler lines
      • 1 electrical connector
    • Oil System
      • Cat Transmission/Drive Train Oil-4 (TDTO) sump oil temperatures
      • Maximum converter outlet oil temperature — 250°F (121°C)
      • Hydraulic fill capacity — 6.5 gal (25 L) subject to cooler size, lines, and installation — initial fill may be greater
      • Direct mount filter
    • Mountings
      • Input (flywheel) — SAE #1 dry flywheel housing
      • Side supports — two SAE #2 pads
      • Output — 1710 yoke, 1810 yoke, 1810 companion flange, ISO 8667-T180 flange
    • Power Take-Off Drives
      • Location
      • 8 bolt mounting type
      • Rated torque
      • Rotation: same as engine
      • Ratio, 1:1

    • Oil system
      • Remote mount oil filter
    • Mountings
      • Remote mount ECU
      • Remote mount filter option
    • Integral Power Take-Off
      • Location: 1 o'clock and 11 o'clock as viewed from rear
      • Mounting type
      • Rated torque
      • Rotation: same as engine
      • Ratio - 1.09:1
    • Rear Power Take-Off
      • Location: 5 o'clock as viewed from rear
      • Mounting type: 8 bolt
      • Rated torque: 1000 lb-ft (1360 N•m)
      • Rotation: Opposite of engine
      • Ratio - 1.25:1


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