973K Track Loader – Steel Mill Configuration

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Factory designed and installed features equip your track loader for the extreme heat and harsh conditions of steel mill work. Maneuverability, visibility and the breakout force needed for fast cycle times make crawler loaders a rugged and efficient choice for handling slag.

Engine

Flywheel Power
275 HP
Engine Model
Cat C9.3 ACERT™
Emissions
U.S. EPA Tier 4 Final/EU Stage IV/Korea Tier 4
Engine Power - Maximum - SAE J1995
310 HP
Engine Power - Maximum - ISO 14396
306 HP
Engine Power - Maximum - ISO 14396 (DIN)
310 HP
Net Power (Rated) - ISO 9249/SAE J1349
275 HP
Net Power (Rated) - ISO 9249/SAE J1349 (DIN)
278 HP
Note (1)
Engine ratings at 1,800 rpm.
Note (2)
No derating required up to 2164 m (7,200 ft) altitude.
Note (3)
All nonroad Tier 4 Final, Stage IV and Korea Tier 4 diesel engines are required to use only Ultra Low Sulfur Diesel (ULSD) with 15 ppm (mg/kg) of sulfur or less, or up to B20 biodiesel blended with ULSD. B20 should meet ASTM D7467 specification (biodiesel
Note (4)
Diesel Exhaust Fluid (DEF) used in Cat Selective Catalytic Reduction (SCR) systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241.

Weights

Operating Weight
74293 lb
Operating Weight - Steel Mill
74293 lb
Shipping Weight - Steel Mill
63097 lb
Note
Steel Mill weights are with new slag bucket.

Buckets

Capacity - General Purpose
4 yd³
Capacity - Slag
4 yd³
Width - Slag
112 in

Undercarriage

Track Shoe Type
Heavy Duty Sealed and Non Lubricated - Steel Mill, Double Grouser
Track Shoe Width - Standard
19.7 in
Track Rollers - Each Side
7
Number of Shoes - Each Side
40
Track on Ground
115.4 in
Ground Contact Area (ISO 16754:2008): Steel Mill Shoe - 500 mm (19.7 in)
5161 in²
Ground Pressure* (ISO 16754:2008): Steel Mill Shoe - 500 mm (19.7 in)
14.4 psi
Grouser Height - Double Grouser
1.9 in
Track Gauge
85 in
Link Pitch
8.5 in
Note
* Calculated using Steel Mill operating weight with Slag Bucket.

Service Refill Capacities

Fuel Tank
101.5 gal (US)
Cooling System
11.6 gal (US)
DEF Tank
9.2 gal (US)

Air Conditioning System

Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.9 kg of refrigerant which has a CO2 equivalent of 2.717 metric tonnes.

Standards

ROPS
ROPS (Rollover Protective Structure) offered by Caterpillar for the machine meets ROPS criteria ISO 3471:2008.
FOPS
FOPS (Falling Object Protective Structure) meets ISO 3449-2005 Level II.
Brakes
Brakes meet the standard ISO 10265:2008.
Cab - Declared Dynamic Operator Sound Pressure Level
  • The declared dynamic operator sound pressure level when "ISO 6396:2008" is used to measure the value for an enclosed cab is 75 dB(A). The measurements were conducted at 80% of the maximum engine cooling fan speed. The sound level may vary at diffe
Cab - Hearing Protection
Hearing protection may be needed when the machine is operated with an open operator station for extended periods, in a noisy environment or with a cab that is not properly maintained.
Cab - Labeled Sound Power Level
The guaranteed exterior sound power level (LWA) is measured according to the dynamic test procedures and the conditions that are specified in "ISO 6395:2008" [111 dB(A)]. The measurements were conducted at 80% of the maximum engine cooling fan speed. The
Sound Level Information (EU)
  • Sound Level Information for Machines in European Union Countries and in Countries that Adopt the "EU Directives": The declared dynamic operator sound pressure level when "ISO 6396:2008" is used to measure the value for an enclosed cab is 75 dB(A).

Dimensions

Overall Machine Width without Bucket: Steel Mill Tracks - 500 mm (19.7 in) Shoes
107.9 in
Overall Machine Width with Slag Bucket: Steel Mill Tracks - 500 mm (19.7 in)
116.5 in
Ground Clearance
18.5 in
Machine Height - Top of Cab
140 in
Length - Front of Track
209.6 in
Overall Machine Length*
298.4 in
Carry Position Approach Angle
15°
Digging Depth*
6.2 in
Maximum Rollback - Ground/Carry Position
43°/47°
Bucket Height - Carry Position
19 in
Reach at Full Lift Height and 45° Dump*
53.8 in
Clearance at Full Lift Height and 45° Dump*
116.2 in
Maximum Rollback/Dump - Fully Raised
59°/49°
Grading Angle
85°
Height - Bucket Hinge Pin
166.1 in
Overall Machine Height - Bucket Fully Raised
226.5 in
Height to Top of the Seat with Headrest
117.6 in
Height - Top of Stack
120.8 in
Ramp Angle
29°
Note
*With General Purpose bucket Performance with heavy duty teeth. Dimensions vary with bucket. Refer to Operating Specifications chart.
  • Machine Height to Top of Cab is with Steel Mill plate.