Toro® TH551i Safer. Stronger. Smarter.
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TS3-TH551i-28-ENG-METRIC
Technical specification Toro® TH551i Toro® TH551i is a high productivity 51 tonne articulated underground dump truck for use in 5 x 5 meter haulage ways. This intelligent truck is a safer, efficient, high capacity and easy to maintain underground truck for optimized fleet management. Toro® TH551i truck features a wide range of intelligence integrated technology, such as Sandvik Intelligent Control system, My Sandvik Digital Services and Automation Readiness as standard, supplemented with Onboard Weighing System option for tracking the payload. With the latest addition of the AutoMine® Trucking Onboard option, the truck enables autonomous haulage for both transfer level and decline ramp application.
Capacities
Toro® TH551i offers a reliable and safer solution that can significantly increase the efficiency and productivity of operations while decreasing the cost per tonne, providing smart productivity. Operator safety, health and comfort are enhanced by the mining focused, sound suppressed, ROPS and FOPS certified cabin.
Dump box motion times & movements
Maximum payload capacity (SAE heaped 2:1)
51 000 kg
Standard dump box
28.0 m³
Dump box range
24 - 30 m³
Speeds (level/loaded) 1st gear
6,3 km/h
2nd gear
8,2 km/h
3rd gear
10,6 km/h
4th gear
13,6 km/h
5th gear
16,6 km/h
6th gear
21,4 km/h
7th gear
27,7 km/h
8th gear
35,1 km/h
Discharging time
14 sec
Dumping angle
62°
Operating weights* Total operating weight
46 870 kg
Front axle
32 860 kg
Rear axle
14 010 kg
Loaded weights* Total loaded weight
97 870 kg
Front axle
44 470 kg
Rear axle
53 400 kg
* Unit weight is dependent on the selected options
3
Operational conditions and limits
Transmission
Environmental temperature
From -20°C to +50°C
Standard operating altitude
With engine Volvo TAD1642VE-B from -1500 m to +1000 m at 25 °C without rated power derate
Fully automatic Dana transmission with electric shifting system and retarder. Includes converter with lock-up and drop box. Standard Operator Speed Assist helps operators maintain speed control when traveling downhill. Eight gears forward and two reverse. Dana self-diagnostics fully integrated into Sandvik Intelligent Control System.
Requirements and compliance
Up box
Compliance with 2004/108/EC Electromagnetic compatibility directive
Katsa
Compliance with 2006/42/EC Machinery directive (Equipment for EU area, achieved with relevant options)
Axles
Compliance with 2006/95/EC Low voltage directive Design based on EN 1889-1. Machines for underground mines. Mobile machines working underground. Safety. Part 1: Rubber tyred vehicles. Design based on MDG 15. Guideline for mobile and transportable equipment for use in mines. (Equipment for Australia, achieved with relevant options) Electrical system based on IEC 60204-1. Safety of machinery – Electrical equipment of machines – Part 1: General requirements CONTAINS FLUORINATED GREENHOUSE GASES Refrigerant R134a under pressure max 38 bar/550 PSI: Filled weight: 1,5 kg CO2e: 2,145 tons GWP: 1430 Information based on the F Gas Regulation (EU) No 517/2016
Ratio 1:1
Front axle
Kessler D106 series, spring applied hydraulic operated brakes, hydraulic suspension
Rear axle
Kessler D106 series, spring applied hydraulic operated brakes, fixed
Tires Tire size (Application approved. Brand and type subject to availability.)
35/65 R33 -E4
Cabin ROPS certification according to EN ISO 3471 FOPS certification according to EN ISO 3449 Sealed, air conditioned, over pressurized, noise suppressed closed cabin
Engine Diesel engine
Volvo TAD1643VE-B (Tier 2)
Engine brake
Yes
Output
565 kW (768 hp) @ 1900 rpm
Torque
3221 Nm @ 1300 rpm
Number of cylinders
In-line 6
Displacement
16.1 l
Cooling system
Liquid cooled
Combustion principle
4-stroke, direct injection, turbo, after cooler
Air filtration
Dry type
Emergency exit
Electric system
24 V
Illuminated steps to the cabin
Emissions
Tier 2, Euro Stage II
Ventilation rate (Ultra low sulphur diesel)
CANMET 48,100 CFM m3/s, MSHA 45000 Ventilation Rate
Three-point contact access system with replaceable and colour coded handles and steps
Particulate index (Ultra low sulphur diesel)
MSHA Particulate Ventilation Index 5,000 CFM
Exhaust system
Catalytic converter with muffler
Average fuel consumption at 50% load
46 l/h
Fuel tank capacity
840 l
Compatible with paraffinic diesel fuel (EN 15940)
Yes
Sound absorbent material to reduce noise Laminated glass windows Cabin mounted on rubber mounts to the frame to reduce vibrations Air conditioning and heating unit as a standard Cyclone pre-filter for A/C device Adjustable steering wheel No high pressure hoses in the cabin Inclinometers to indicate operating angle
12 V output Remote circuit breaker switch Mirrors defrost Trainer’s seat (behind operator)
TS3-TH551i-28-ENG-METRIC
Control system, dashboard and displays
Hydraulics
Sandvik Intelligent Control System
Filling pump for hydraulic oil
Critical warnings and alarms displayed as text and with light, warnings and alarms recorded to the control system log
Filtration
5.7” display with adjustable contrast and brightness
Door interlock for brake hydraulics and steering
Instrument panel with illuminated switches
Oil cooler for hydraulic and transmission oil, capability up to 55°C ambient temperature
My Sandvik Digital Services Knowledge Box™ on-board hardware
ORFS fittings
AutoMine® Trucking readiness
Hydraulic oil tank capacity 280 l
Supports 3G, 4G, LTE and WLAN data transfer
Sight glass for oil level, 2 pcs
Operator’s seat
Steering hydraulics
Low frequency suspension Height adjustment
Fully hydraulic, center articulad, power steering with two double acting cylinders. Closed-center system with a load sensing piston type pump and pilot operated orbital wheel steering.
Adjustment according to the operator’s weight
Steering main valve
Pilot operated
Fore & aft isolator to minimise vibrations in driving direction
Steering hydraulic cylinders
140 mm, 2 pcs
Padded and adjustable arm rests
Steering pump
Variable displacement piston pump
Adjustable lumbar support Dump box hydraulics
Selectable damping
Four-point seat belt on operator’s seat
Fully hydraulic system, equipped with variable displacement piston pump. Oil flows to box hydraulic system from the steering hydraulics. Oil flow from the brake circuit pump is divided to the brake system and oil cooler motor.
Three-point seat belt on trainer’s seat
Hydraulic pump
Variable displacement piston pump
Seatbelt monitoring system
Control valve
Solenoid operated
Measured vibration level
Main valve
Solenoid operated
Whole body vibration was determined while operating the truck in a simulated working cycle consisting of loading, unloading and driving with and without load. The value is determined applying standards EN 1032 and ISO 2631-1.
Cylinders
180 mm, 2 pcs
Maximum r.m.s. value aw [m/s2]
0,69 (driving with load)
VDVW over 15 min period [m/s1.75]
8,37 (driving with load)
Measured sound level
Brakes Service brakes are spring applied; hydraulically operated multi disc wet brakes on all wheels. Two independent circuits: one for the front and one for the rear axle. Service brakes also function as an emergency and parking brake. Brake system performance complies with requirements of EN ISO 3450, AS2958.1 and SABS 1589.
The sound pressure level and sound power level at the operator’s compartment have been determined in stationary conditions on high idle and at full load, with engine Volvo TAD1642VE:
Neutral brake, brake activates after 3sec in neutral gear
Sound pressure level LpA [dB re 20 μPa]
75 dB
Electrically driven emergency brake release pump
Sound power level LWA [dB ew 1 p W]
121 dB
Automatic brake activation system, ABA
Foot operated brake pedal valve, fully modulated Brake oil tank capacity, 100 l
Rear and front frame
Electrical equipment
High strength structure with optimized material thicknesses. Reduced own weight for higher overall hauling capacity and long structural lifetime. Welded steel construction.
Alternator
28 V, 150 A
Batteries
2 × 12V 180 Ah
Automatic central lubrication
Starter
24 V, 7 kW
Driving lights
LED lights 4 pcs in front 4 pcs in rear
Working lights
LED lights: 4 pcs in front 4 pcs in rear
Central hinge with adjustable lower bearing Tanks are stand alone structures and bolted onto main frame Removable belly guards
5
Electrical equipment
Optional engine
Parking, brake and indicator (blinkers) lights
LED lights: 2 pcs in front 2 pcs in rear
Diesel engine
Volvo TWD1683VE
Engine brake
305 kW @ 1900 rpm
Control system
5,7” Color display, 5 modules, inbuilt system diagnostics
Requirements
Ultra low sulphur fuel and AdBlue
Output
585 kw (784 hp) @ 1900 rpm
Torque
3650 Nm @ 1200 rpm
Emissions
Euro Stage V (CE)
Ventilation rate (Ultra low sulphur diesel)
CANMET 27 000 CFM MSHA 25 000 CFM
Particulate index (Ultra low sulphur diesel)
MSHA Particulate Ventilation Index CFM 3000
Compatible with paraffinic diesel fuel (EN 15940)
Yes
Reverse Camera Reverse alarm (CE) Flashing beacon
Illumination Illuminance Eav with 2 pieces of 50 W led lights at a distance of 20 m in front of the truck: Head lights, low beam Eav
12 lx
Illuminance Eav with 2 pieces of 50 W led lights at a distance of 20 m behind the truck:
Options
Reversing lights, low beam Eav
ANSUL Twin fire suppression system (CE)
13 lx
Toro® TH551i is compliant with the South African Mine health and safety act 29 of 1996, as the average light intensity in the direction of travel is more than 10 lux at a distance of 20 m.
Arctic package 120V or 230V (preheater for hydr. oil, brake oil transmission, up-box, drop box and engine) AutoMine® Trucking: Onboard Package Box-up support device (N/A with Ejector box)
Fire safety
Carryback reduction system
Portable fire extinguisher, 12 kg
CE Declaration of conformity
Hot side - cold side design Isolation of combustibles and ignition sources Heat insulation on exhaust manifold, turbo, and isolated exhaust pipe
Cover grills for lamps Diesel particulate filter (for Tier 2, Euro Stage II engine) Direct feed for beacon Duck tail
Energy isolation Lockable main switch, ground level access
Dump box 28.0 m3 (SAE heap. 2:1) made with SSAB Zero™ steel Emergency steering
Starter isolator Emergency stop push buttons according to EN ISO 13850: 1 pc in cabin, 1 pc in front frame. 2 pcs in rear frame
Fire suppression system Sandvik Eclipse with auto shutdown Harsh conditions package
Pressure release in the radiator cap
Integrated jacking system
Automatic discharge for pressure accumulators (brake system and pilot circuit)
Integrated weighing system (IWS)
Frame articulation locking device
Integrated weighing system (IWS) with external screens
Mechanical dump box locking device
Jump start interface
Wheel chocks and brackets
Live oil sampling kit Pre- and post-lubrication for turbo
Documentation
Proximity Detection System (PDS) interface
Operator’s Manual
English and other EU languages
Maintenance Manual
English and other EU languages
Parts Manual
English
Seat, Actimo XXL with high backrest+headrest, adjustable armrests with four-point seatbelt
Service and Repair Manual
English
Service stand
E-manuals
2 × USB stick in pdf format, includes all the manuals
Spare rim 33-28.00/3.5 (for tyres 35/65R33)
Decals
English and other EU languages
Safety rails
Spill guard Tyre Pressure Monitoring System Water cooled alternator Wiggins fuel fill system Wiggins quick filling set for fuel and oils (hydraulic, engine and transmission)
TS3-TH551i-28-ENG-METRIC
Available boxes Standard
Ejector
Ejector
Box capacity SAE heaped 2:1 (m3)
24
26
28
30
25
28
Material broken density with 90% fill factor (t/m3)
2.3
2.1
2.0
1.8
1.8
1.6
Total height (mm)
2936
3048
3157
3304
3167
3402
* According to SAE 1363/ISO 6483
Grade performance Volvo TAD1643VE-B (Tier 2), 3 % rolling resistance, with lock-up Empty Percent grade
0.0
2.0
4.0
6.0
Ratio
8.0
10. 0
12.5
14.3
17.0
20.0
1:12
1:10
1:8
1:7
1:6
1:5
1st gear (km/h)
6,3
6,3
6,3
6,3
6,3
6,2
6,2
6,2
6,2
6,1
2nd gear (km(h)
8,2
8,2
8,1
8,1
8,1
8,1
8,0
8,0
7,9
7,9
3rd gear (km/h)
10,7
10,7
10,6
10,5
10,5
10,4
10,4
10,3
10,3
10,2
4th gear (km/h)
13,7
13,6
13,6
13,5
13,4
13,3
13,2
13,1
13,0
12,8
5th gear (km/h)
16,8
16,7
16,5
16,4
16,3
16,1
16,0
15,8
15,5
15,0
6th gear (km/h)
21,8
21,5
21,3
21,1
20,9
20,6
20,1
19,6
17,9
7th gear (km/h)
28,3
27,9
27,5
27,1
26,6
25,7
23,1
8th gear (km/h)
36,1
35,5
34,9
34,0
31,9
0.0
2.0
4.0
6.0
8.0
10. 0
12.5
14.3
17.0
20.0
1:12
1:10
1:8
1:7
1:6
1:5
Loaded Percent grade Ratio 1st gear (km/h)
6,3
6,3
6,2
6,2
6,1
6,1
6,1
6,0
6,0
5,9
2nd gear (km(h)
8,2
8,1
8,0
8,0
7,9
7,8
7,7
7,7
7,5
7,3
3rd gear (km/h)
10,6
10,5
10,4
10,3
10,2
10,0
9,8
9,5
8,6
4th gear (km/h)
13,6
13,4
13,2
13,0
12,8
12,3
11,1
5th gear (km/h)
16,6
16,3
16,0
15,7
15,0
13,2
6th gear (km/h)
21,4
20,9
20,3
18,7
7th gear (km/h)
27,7
26,8
24,1
8th gear (km/h)
35,1
32,7
7
Grade performance Volvo TWD1683VE (Stage V), 3 % rolling resistance, with lock-up Empty Percent grade
0.0
2.0
4.0
6.0
Ratio
8.0
10. 0
12.5
14.3
17.0
20.0
1:12
1:10
1:8
1:7
1:6
1:5
1st gear (km/h)
6,2
6,2
6,1
6,1
6,1
6,1
6,1
6,1
6,0
6,0
2nd gear (km(h)
8,2
8,1
8,1
8,1
8,1
8,0
8,0
8,0
7,9
7,9
3rd gear (km/h)
10,6
10,5
10,5
10,4
10,4
10,3
10,3
10,2
10,2
10,1
4th gear (km/h)
13,5
13,5
13,4
13,3
13,2
13,2
13,1
13,0
12,9
12,8
5th gear (km/h)
16,6
16,5
16,3
16,2
16,1
16,0
15,9
15,8
15,6
15,2
6th gear (km/h)
21,9
21,7
21,5
21,3
21,1
20,9
20,5
20,1
18,5
16,5
7th gear (km/h)
28,2
27,9
27,6
27,2
26,9
26,1
23,8
21,7
8th gear (km/h)
36,1
35,5
35,0
34,3
32,8
28,6
0.0
2.0
4.0
6.0
8.0
10. 0
12.5
14.3
17.0
20.0
1:12
1:10
1:8
1:7
1:6
1:5
Loaded Percent grade Ratio 1st gear (km/h)
6,1
6,1
6,1
6,0
6,0
6,0
5,9
5,9
5,9
5,9
2nd gear (km(h)
8,1
8,1
8,0
7,9
7,9
7,8
7,8
7,7
7,6
7,4
3rd gear (km/h)
10,5
10,4
10,3
10,2
10,1
10,0
9,8
9,6
8,9
7,9
4th gear (km/h)
13,4
13,3
13,1
12,9
12,8
12,4
11,4
10,4
5th gear (km/h)
16,4
16,1
15,9
15,7
15,1
13,6
6th gear (km/h)
21,5
21,1
20,7
19,3
15,2
7th gear (km/h)
27,7
27,0
24,8
8th gear (km/h)
35,2
33,3
TS3-TH551i-28-ENG-METRIC TS3-TH551i-28-ENG-METRIC © Sandvik Mining and Construction Oy 2026. SANDVIK is a registered trademark owned by Sandvik Intellectual Property AB in Sweden and other countries. Sandvik Mining and Construction Oy reserves the right to alter specifications without notice. Note: Machines shown in pictures may be equipped with options.
Dimensions The dimensions shown in the pictures are from Toro® TH663i truck. Refer to the table below for accurate measurements of Toro® TH551i.
Dimensions Dump boxes
Standard
Ejector
Ejector
Volume SAE heaped 2:1*
(M³)
24
26
28
30
25
28
Maximum material density with fill factor of 90%
(T/m³)
2.3
2.1
2.0
1.8
1.8
1.6
Overall machine length
L1 (mm)
11581
11581
11581
11581
11790
11790
Rear axle to rear of machine
L2 (mm)
2101
2101
2101
2101
2310
2310
Dump position height max
H1 (mm)
6759
6829
6875
6965
Sae heap height
H2 (mm)
3655
3765
3863
4010
3945
4145
Dumpbox spillguard
H3 (mm)
2961
3071
3173
3316
3200
3435
Discharge height
H4 (mm)
690
690
690
690
1131
1131
Ejector bucket tailgate height
H5 (mm)
2429
2429
Dumpbox width
W1 (mm)
3228
3228
3228
3228
3200
3200
Dumpbox inner turn radius
R1 (mm)
5038
5038
5038
5038
5038
5038
Minimum tunnel width
T1 (mm)
5789
5789
5789
5789
5789
5789
Tunnel width
T2 (mm)
4932
4932
4932
4932
4932
4932
* According to SAE 1363/ISO 6483
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