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R2900G Underground Mining Loader

R2900G Underground Mining Loader

At a Glance

Engine Model
Cat® C15
Engine Power - VR Engine - ISO 14396:2002
401 HP
Rated Payload
37920 lb
5.4 in
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The R2900G underground loader is designed for high production, low cost-per-ton loading and tramming in underground mining applications. Compact design with agile performance, rugged construction and simplified maintenance ensures excellent productivity, long life and low operating costs. Engineered for performance, designed for comfort, built to last.


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Engine Model Cat® C15
Engine Power - VR Engine - ISO 14396:2002 401HP
Bore 5.4in
Stroke 6.8in
Displacement 927.9in³
Rated Power 1800r/min
Engine Power - Tier 3 Engine - ISO 14396:2002 401HP
Note (2) All rating conditions are based on ISO/TR14396:2002, inlet air standard conditions with a total barometric pressure of 100 kPa (29.5 in Hg), with a vapor pressure of 1 kPa (0.295 in Hg), and 25° C (77° F). Performance measured using fuel to EPA specificat
Note (4) Optional Ventilation Reduction Package available.
Note (1) Power ratings apply at a rated speed of 1,800 rpm when tested under the reference conditions for the specified standard.
Note (3) No engine derating required up to 591 m (1,938 ft) altitude.
Note (5) Optional Tier 3 engine package emits equivalent to U.S. EPA Tier 3 and EU Stage IIIA.

Operating Specifications

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Rated Payload 37920lb
Gross Machine Mass 155095lb
Static Tipping Load - Straight Ahead - Lift Arms Horizontal 88015lb
Static Tipping Load - Full Turn - Lift Arms Horizontal 75109lb
Breakout Force - SAE 60298lb

Hydraulic Cycle Times

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Raise 9.2s
Dump 3.4s
Lower, Empty, Float Down 3.1s
Total Cycle Time 15.7s

Turning Dimensions

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Axle Oscillation
Articulation Angle 42.5°
Inner Clearance Radius 133.2in
Outside Clearance Radius 288.3in


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Forward - 1 3.4mile/h
Forward - 2 6mile/h
Forward - 3 10.7mile/h
Forward - 4 18.5mile/h
Reverse - 1 4.1mile/h
Reverse - 2 7.3mile/h
Reverse - 3 13mile/h
Reverse - 4 22mile/h


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Tire Size 29.5 × 29

Service Refill Capacities

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Front Differential and Final Drives - With Axle Oil Cooling System 42gal (US)
Rear Differential and Final Drives - With Axle Oil Cooling System 44.1gal (US)
Engine Crankcase 9gal (US)
Fuel Tank - Dual 376.4gal (US)
Cooling System 19.8gal (US)
Front Differential and Final Drives 31.4gal (US)
Hydraulic Tank 37gal (US)
Rear Differential and Final Drives 33.5gal (US)
Transmission 16.4gal (US)


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Note *Calculated Weight.
Operating Mass + Rated Payload* - Rear Axle 37895lb
Operating Mass* 110692lb
Operating Mass + Rated Payload* - Front Axle 110716lb
Operating Mass* - Front Axle 50832lb
Operating Mass + Rated Payload* 148611lb
Operating Mass* - Rear Axle 59860lb


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Cab - ROPS ISO 3471, SAE J1040, AS2294.2, EN13510
Brakes ISO 3450, AS2958.1, CAN-CSA424.30-M90
Cab - FOPS ISO 3449, SAE J231, AS2294.3, EN13627

Bucket Capacities

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Dump Bucket - 4 11.6yd³
Dump Bucket - 2 9.4yd³
Dump Bucket - 3 10.9yd³
Dump Bucket - 1 8.2yd³