Transmissions TH48-E80

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Key Specs

Gross Input Power
2300 BHP
1715 bkW
Gross Peak Input Torque
6556 ft-lb
9024 N·m
Rated Input Speed
1900 r/min
1900 r/min


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. Ideal applications for Cat TH48-E80 transmissions include pressure pumping, kill mud pumps, coil tubing pump support, nitrogen units, and acidizing units. TH48-E80 transmissions are optimized for use with Cat 3512B, Cat 3512C, and Cummins QSK50 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 TH48-E80 oilfield transmission. Gross input power: 1715 bkW (2300 bhp).

Product Specifications for TH48-E80

Gross Input Power 2300 BHP 1715 bkW
Gross Peak Input Torque 6556 ft-lb 9024 N·m
Rated Input Speed 1900 r/min 1900 r/min
Gear Type Straight spur planetary Straight spur planetary
Gears 8F/0R 8F/0R
1F Gear Ratio 3.34 3.34
2F Gear Ratio 2.45 2.45
3F Gear Ratio 2.20 2.20
4F Gear Ratio 1.81 1.81
5F Gear Ratio 1.62 1.62
6F Gear Ratio 1.36 1.36
7F Gear Ratio 1.19 1.19
8F Gear Ratio 1.00 1.00
Width 33.85 in 859.9 mm
Height 46.34 in 1177 mm
Weight 4878 lb 2213 kg
Length 78.13 in 1984.4 mm

TH48-E80 Standard Equipment

Cat Engines for Optimized Power Train

  • Cat 3512B
  • Cat 3512C
  • Cummins QSK45
  • Cummins QSK50

Transmission Rotation

  • Input rotation — counterclockwise
  • Output rotation — counterclockwise (as viewed from rear)

Torque Converter

  • Integral torque converter
  • Series — TC58927-ESLF
  • Stall torque ratio - 2.20


  • 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. 152 L (40 gal), subject to cooler size, lines, and installation.
  • Filter Type — 10 micron synthetic, cartridge remote mount


  • Input connection (flywheel) — SAE #0
  • Output connections (yoke) — GWB 390.60/GWB 390.65
  • 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: SAE 8 bolt (J704)
  • Rated power

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