TH55-E90 Oilfield Transmission

  • Overview
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Engine Specifications
Gross Input Power 2461.0 bkW (3300.0 bhp)
Gross peak input torque 12677.0 N·m (9350.0 ft-lb)
Rated input speed 1900.0 RPM (1900.0 RPM)
Gears 9F/0R
1F gear ration 4.67
2F gear ration 3.43
3F gear ration 3.03
4F gear ration 2.53
5F gear ration 2.22
6F gear ration 1.85
7F gear ration 1.64
8F gear ration 1.36
9F gear ration 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
      • Continuous — 194°F (90°C)
      • Maximum Intermittent — 210°F (99°C)
      • Continuous — 90°C (195°F)
      • Maximum Intermittent — 99°C (210°F)
    • 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
      • GWB 390.65
      • GWB 390.70 > 2500 hp
    • Structural application subject to Caterpillar approval
  • Control System
    • Electronic Control Unit (ECU)
    • Electronic data link, SAE J1939
    • Electrical system 24V
  • Power Take-Off Drives
      • 3 o’clock and 11 o’clock from rear
      • SAE 8 bolt (J704) @ 3 o’clock*
      • SAE C-size (J744) @ 11 o’clock
      • 2- and 4-bolt mount
      • *Pump drive subject to 15 kW (20 hp) @ 1900 rpmlimitation until device is approved by Caterpillar
      • 112 kW/150 hp continuous

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