TH55-E90 Oilfield Transmission

  • Overview
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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 9F/0R
1F Gear Ratio 4.67
2F Gear Ratio 3.43
3F Gear Ratio 3.03
4F Gear Ratio 2.53
5F Gear Ratio 2.22
6F Gear Ratio 1.85
7F Gear Ratio 1.64
8F Gear Ratio 1.36
9F 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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