CAT 631G Motor Scraper


Dimensions

Overall Length 47.78 ft in (14565 mm)
Overall Width 12.92 ft in (3938 mm)
Overall Height 14.07 ft in (4286 mm)
Wheelbase 28.77 ft in (8769 mm)
Tractor Ground Clearance 2.19 ft in (665 mm)
Height To Top Of Cab 12.19 ft in (3715 mm)
Length – Overall Machine 573.4 in (14564.36 mm)
Rear Axle – Rear Of Machine 95.8 lb/in (17.11 kg/cm)
Wheel Base 345.25 lb/in (61.66 kg/cm)
Width – Inside Of Bowl 134 in (3403.6 mm)
Width – Outside Rear Tires 143.2 in (3637.28 mm)
Width – Overall Machine 155 lb/in (27.68 kg/cm)
Width – Rear Tire Center Lines 97 lb/in (17.33 kg/cm)
Axle To Vertical Hitch Pin 21.6 in (548.64 mm)
Width – Tractor 137 in (3479.8 mm)
Front Of Tractor To Front Axle 132.25 lb/in (23.62 kg/cm)
Ground Clearance – Tractor 26.2 lb/in (4.68 kg/cm)
Height – Overall Shipping 167.75 in (4260.86 mm)
Height – Scraper Blade Maximum 21.5 in (546.1 mm)
Height – Top Of Cab 146.25 lb/in (26.12 kg/cm)

Tractor Engine

Make CAT
Model 3408E
Gross Power 515 hp (384 kw)
Displacement 1099 cu in (18.1 L)

Engine Details

Tractor Engine 3408E

Tractor Engine

Flywheel Power – Tractor/Scraper 373 kW (500 hp)
Net Power – Gears 1-2 450 hp (335.6 kw)
Gross Power – Gears 1-2 480 hp (358 kw)
CAT Net Power 490 hp (365.4 kw)
Iso 9249 490 hp (365.4 kw)
Eec 80/1269 490 hp (365.4 kw)
Sae J1349 490 hp (365.4 kw)
Bore 5.4 lb/in (1 kg/cm)
Stroke 6 lb/in (1.1 kg/cm)
Net Power – Gears 3-8 490 hp (365.4 kw)
Gross Power – Gears 3-8 515 hp (384.1 kw)
Net Power – Tractor/Scraper 336 kW (450 hp)

Operational Specs

Fuel Tank Capacity 215.1 gal (814 L)
Cooling System Fluid Capacity 32 gal (122 L)
Engine Oil Fluid Capacity 11.7 gal (45 L)
Transmission Fluid Capacity 33 gal (127 L)
Differential Fluid Capacity 36 gal (136 L)
Hydraulic System Fluid Capacity 50.2 gal (190 L)
Wheel Coolant Fluid Capacity – Each 19.8 gal (75 L)
Operating Voltage 24 V
Alternator Supplied Amperage 75 amps
Tire Size 37.50-R35

Transmission

Transmission Type 8-speed automatic Powershift with Electronic Control
Number Of Forward Gears 8
Number Of Reverse Gears 1
Max Speed Forward 33.2 mph (53.5 km/h)
Max Speed Reverse 6.2 mph (9.9 km/h)
Reverse 6.2 mile/h

Steering

Width – 180 Degrees Turn 40.1 ft in (12.3 m)
Steering Angle – Right 90 degrees
Steering Angle – Left 85 degrees
Hydraulic Output 96.2 gal/min

Transmission

1 Forward 2.9 mph (4.7 km/h)
2 Forward 5.2 mph (8.4 km/h)
3 Forward 7.4 mph (12 km/h)
4 Forward 10 mph (16.1 km/h)
5 Forward 13.4 mph (21.6 km/h)
6 Forward 18.2 mph (29.3 km/h)
7 Forward 24.5 mph (39.5 km/h)
8 Forward 33.2 mph (53.5 km/h)
Top Speed – Loaded 33 mph (53.2 km/h)

Steering

Ground-Driven Secondary Steering System 51 gal/min

Weights

Total Operating – Empty 102459.8 lb (46475 kg)
Operating Weight 102460 lb (46475.1 kg)
Front Axle – Empty 68647.5 % (68647.46 %)
Rear Axle – Empty 33812.3 % (33812.26 %)
Total Operating – Loaded 177460 lb (80495 kg)
Front Axel – Loaded 94054 lb (42662 kg)
Rear Axle – Loaded 83406 %

Bowl

Rated Payload 75000 lb (34020 kg)
Heaped Capacity 31 yd3 (23.7 m3)
Struck Capacity 21 yd3 (16.1 m3)
Max Depth Of Cut 17.2 in (437 mm)
Width Of Cut 11.6 ft in (3512 mm)

Standards

Brakes Meets ISO 3450: 1996 standard
Rops/Fops Meets SAE J320a, SAE J1040 MAY 94, and ISO 3471-1994
Cab Meets ANSI, SAE

Hydraulics

Bowl Cylinder Bore 7.2 in (182.9 mm)
Bowl Cylinder Stroke 34.4 in (873.8 mm)
Steering Circuit 103 gal/min
Scraper Circuit 91 gal/min
Cushion Hitch Circuit 9 gal/min
Relief Valve – Steering Circuit 1987 psi
Relief Valve – Implement Circuit 2030 psi
Compensator Settings – Cushion Hitch Circuit 2320 psi
Ejector Cylinder Bore 8.3 in (210.9 mm)
Ejector Cylinder Stroke 74 in (1879.6 mm)
Secondary Steering Circuit 77 gal/min
Apron Cylinder Bore 8.2 in (208.3 mm)
Apron Cylinder Stroke 28.6 in (726.5 mm)

Scraper Bowl

Capacity Heaped 34 yd3 (26 m3)
Width – Cut – To Router Bits 138.3 lb/in (24.7 kg/cm)
Rated Load 75000 lb (34019.5 kg)
Capacity – Struck 21 yd3 (16.1 m3)
Depth Of Cut – Maximum 17.2 lb/in (3.1 kg/cm)
Ground Clearance – Maximum 21.5 in (546.1 mm)
Cutting Edge Thickness 1.7 in (41.2 mm)
Depth Of Spread – Maximum 18.9 in (480.1 mm)
Scraper Capacity – Heaped 31 yd3 (23.8 m3)
Hyd. Penetration Force – 621g 57375 lb (26024.9 kg)
Apron Closure Force 38250 lb (17350 kg)
Apron Opening 79 in (2006.6 mm)
Hyd. Penetration Force – 631g 57375 lb (26024.9 kg)

Service Refill Capacities – Scraper

Wheel Coolant – Each 19.8 gal (75 L)

Service Refill Capacities – Tractor

Transmission 33 gal (125 L)
Differential 36 gal (136.3 L)
Final Drive – Each 7 gal (26.5 L)
Cooling System 32 gal (121.2 L)
Hydraulic Reservoir 50 gal (189.3 L)
Crankcase 11.7 gal (44.3 L)
Wheel Coolant – Each 19.5 gal (73.9 L)
Windshield Washer 6 gal (22.8 L)
Fuel Tank – 631g 215.1 gal (814.1 L)

Weights – Standard, Tandem

Total Shipping 100006 lb (45362 kg)
Tractor Shipping 46002 lb (20866.2 kg)
Scraper Shipping 54004 lb (24495.9 kg)
Total Operating – Empty 102460 lb (46475.1 kg)
Front Axle 68648 lb (31138.3 kg)
Rear Axle 33812 lb (15336.9 kg)
Total Operating – Loaded 177460 lb (80494.6 kg)
Front Axle Weight – Loaded 94054 lb (42662.2 kg)
Rear Axle – Weight – Loaded 83406 lb (37832.4 kg)

Transmission – 631g

1 Forward 2.9 mph (4.7 km/h)
2 Forward 5.2 mph (8.4 km/h)
3 Forward 7.4 mph (12 km/h)
4 Forward 10 mph (16.1 km/h)
5 Forward 13.4 mph (21.6 km/h)
6 Forward 18.2 mph (29.3 km/h)
7 Forward 24.5 mph (39.5 km/h)
8 Forward 33.2 mph (53.5 km/h)
Reverse 6.2 mph (10 km/h)
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