TH55-E90 Oilfield Transmission

TH55-E90 Oilfield Transmission

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.TH55-E90 transmissions are ideal for pressure pumping applications. TH55-E90 transmissions are optimized for use with Cat 3512C (HD), Cat 3516C (HD), Cummins QSK 50, Cummins, QSK 60, MTU 12V4000. and MTU 16V4000 engines.Cat transmissions are backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty.Cat TH55-E90 oilfield transmission. Gross input power: 2461 bkW (3300 bhp).

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Engine Specifications

Gross Input Power
3300.0bhp
Gross peak input torque
9350.0ft-lb
Rated input speed
1900.0RPM
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
    • Cat Transmission/drive Train Oil-4 (tdto)
      • Continuous — 194°F (90°C)
      • Maximum Intermittent — 210°F (99°C)
    • Sump Oil Temperatures
      • 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
    • Output Connections (flange)
      • 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
    • Location
      • 3 o’clock and 11 o’clock from rear
    • Mounting Type
      • 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
    • Rated Power
      • 112 kW/150 hp continuous