SEM 660D Wheel Loader
SEM · Wheel Loader

SEM 660D 6-tonne wheel loader

6,000 kg rated payload, a 3.3-5.5 m³ bucket and a 178 kW Weichai WD10G. Load-sensing hydraulics with a shared-flow circuit, ten brake calipers split six front and four rear, and a cooling package rated to 43 °C as standard, 50 °C as an option.

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Operating weight
20,100kg
Rated payload
6,000kg
Bucket capacity
3.3–5.5m³
Engine power
178kW

Built for day-in, day-out production

01

178 kW and 6 tonnes of payload

Weichai WD10G behind a three-stage air filter that takes out 93% of dust, with an oil-bath filter option for quarry work.

02

Load-sensing hydraulics

Shared-flow load-sensing circuit plus a relocated hydraulic tank that keeps the pump fed and extends its service life.

03

Ten brake calipers

Six front and four rear on SEM-built axles, with split calipers so changing a disc no longer means pulling the axle.

04

Cooling for hot sites

Standard package rated to 43 °C with a 50 °C option, on damped mounts that survive rough haul roads.

SEM 660D specifications

Full technical data for this machine. Tell us your working conditions and we will confirm the attachment, bucket or blade, and tyre options before you order.

Engine & power

Engine modelWeichai WD10G
Rated power178 kW / 239 hp
Rated speed2,000 rpm
Displacement9.73 L
Emission standardTier 2

Transmission & axles

Transmission typeCountershaft, power shift
GearsF4 / R4
Torque converterSEM TR200
Forward I / Reverse I7.6 / 7.6 km/h
Forward II / Reverse II14 / 14 km/h
Forward III / Reverse III22 / 22 km/h
Forward IV / Reverse IV37 / 37 km/h
Axle reductionSpiral bevel gear, single stage
Final drivePlanetary, single stage
Rear axle oscillation±11°

Hydraulics & brakes

Implement systemPilot hydraulic, single pump
Lift time5.3 s
Hydraulic cycle time9.75 s
Implement system pressure18 MPa
Service brakeAir-over-oil, dry caliper
Parking brakeDrum / shoe
Steering systemCoaxial flow amplified
Steering pumpLoad-sensing piston pump
Steering system pressure16 MPa
Steering angle38°

Payload, dimensions & capacities

Rated payload6,000 kg
Operating weight20,100 kg
Bucket capacity3.3 – 5.5 m³
Wheelbase3,350 mm
Overall dimensions (L × W × H)8,541 × 3,092 × 3,458 mm
Breakout force197 kN
Drawbar pull194 kN
Dump clearance3,051 mm
B-pin height4,196 mm
Tire size23.5-25
Tire typeBias, 20 PR, L3
Fuel tank252 L
Hydraulic oil tank165 L
Coolant48 L
Transmission oil53 L
Differential & final drives44 L × 2

Specifications are indicative and subject to the final configuration of the unit supplied. Figures may vary with optional equipment, bucket type and local emission requirements. Request the current datasheet for your market before ordering.

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