TH55-E70 Oilfield Transmission

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Transmission Specifications
Gross Input Power 2461 bkW (3300 BHP)
Gross Peak Input Torque 12677 N·m (9350 ft-lb)
Rated Input Speed 1900 r/min (1900 r/min)
Gears 7F/0R
1F Gear Ratio 6.25
2F Gear Ratio 4.59
3F Gear Ratio 3.38
4F Gear Ratio 2.48
5F Gear Ratio 1.83
6F Gear Ratio 1.36
7F Gear Ratio 1.00

Standard Equipment

  • Cat Engines for Optimized Power Train
    • Cat C3512C (HD)
    • Cat 3516C (HD)
    • Cummins QSK50
    • Cummins QSK60
    • MTU 12V4000
    • MTU 16V4000
  • Transmission Rotation
    • Input rotation — counterclockwise
    • Output rotation — counterclockwise(as viewed from rear)
  • Torque Converter
    • Integral torque converter
    • Series — TC64442-ESLF
    • Stall torque ratio — 2.23
  • 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
    • 1 pump
  • Oil System
    • Cat Transmission/Drive Train Oil-4 (TDTO)
    • Sump oil temperatures
    • Hydraulic fill capacity — Approx. 189 L (50 gal), subject to cooler size, lines, and installation.
    • Filter Type — 6 micron synthetic, cartridge remote mount
  • Mountings
    • Input connection (flywheel) — SAE #0
    • Output connections (flange)
    • Structural application subject to Caterpillar approval
  • Control System
    • Electronic Control Unit (ECU)
    • Electronic data link, SAE J1939
    • Electrical system 24V
  • Power Take-Off Drives
    • Location
    • Mounting type
    • Rated power

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