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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).
Request a QuoteGross Input Power3300BHP
Gross Peak Input Torque9350ft-lb
Rated Input Speed1900r/min
Gears9F/0R
1F Gear Ratio4.67
2F Gear Ratio3.43
3F Gear Ratio3.03
4F Gear Ratio2.53
5F Gear Ratio2.22
6F Gear Ratio1.85
7F Gear Ratio1.64
8F Gear Ratio1.36
9F Gear Ratio1.00
Standard
Cat C3512C (HD)
Cat 3516C (HD)
Cummins QSK50
Cummins QSK60
MTU 12V4000
MTU 16V4000
Standard
Input rotation — counterclockwise
Output rotation — counterclockwise(as viewed from rear)
Standard
Integral torque converter
Series — TC64442-ESLF
Stall torque ratio — 2.23
Standard
Clutches — electro-hydraulic fully modulated, oil cooled, multidisc
Clutch modulation control — Cat Electronic Clutch Pressure Control (ECPC)
Standard
2 oil cooler lines
1 electrical connector
1 pump
Standard
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
Standard
Input connection (flywheel) — SAE #0
Output connections (flange)
Structural application subject to Caterpillar approval
Standard
Electronic Control Unit (ECU)
Electronic data link, SAE J1939
Electrical system 24V
Standard
Location
Mounting type
Rated power
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