Industrial Motor Graders for Heavy Earthmoving and Road Construction

 

CNMAC supplies 15-ton to 17-ton heavy-duty motor graders engineered for road subgrade finishing, precision leveling, ditching, and haul road maintenance. Built on high-torque turbocharged diesel engines, heavy-duty planetary power shift transmissions, and rigid A-frame drawbar structures, these units deliver consistent blade traction and contour precision under abrasive soil conditions.

 
  • Small Motor Grader
    ● 15T Motor Grader | PY165C
    ● Engine Model: CUMMINS6BTA5.9
    ● Gross Power: 125kW @ 2300rpm
    ● Operating Weight: 15000kg
  • Construction Motor Grader
    ● 16T Motor Grader | PY180C
    ● Engine Model: CUMMINS 6BTA5.9
    ● Rated Power; 132kW @ 2300rpm
    ● Operating Weight: 16000kg
  • Road Construction Grader
    ● 16.9T Motor Grader | PY220C
    ● Engine Model: CUMMINS6CTA8.3
    ● Rated Power: 160kW @ 2200rpm
    ● Operating Weight: 16900kg
 
Motor Grader Product Lineup

 

Grader Category

Operating Weight

Engine

Primary Applications

Small-to-Medium Utility Grader

15,000 kg

Cummins 6BTA5.9 (125 kW / 168 hp @ 2300 rpm)

Rural road construction, trench backfilling, site preparation, municipal maintenance

Construction and Earthmoving Grader

16,000 kg

Cummins 6BTA5.9 (132 kW / 177 hp @ 2300 rpm)

Main road sub-base grading, industrial yard leveling, medium-scale infrastructure projects

Heavy Infrastructure Grader

16,900 kg

Cummins 6CTA8.3 (160 kW / 214 hp @ 2200 rpm)

Mining haul road maintenance, highway construction, heavy-duty ripping operations

Technical Specifications

 

Parameter

PY165C (15T)

PY180C (16T)

PY220C (17T)

Operating Weight

15,000 kg

16,000 kg

16,900 kg

Engine Model

Cummins 6BTA5.9

Cummins 6BTA5.9

Cummins 6CTA8.3

Rated Power Output

125 kW @ 2300 rpm

132 kW @ 2300 rpm

160 kW @ 2200 rpm

Max Torque Output

710 Nm

750 Nm

980 Nm

Transmission Type

Electro-hydraulic Power Shift

Electro-hydraulic Power Shift

Electro-hydraulic Power Shift

Gears (Forward / Reverse)

6 FWD / 3 REV

6 FWD / 3 REV

6 FWD / 3 REV

Max Travel Speed (FWD)

38 km/h

38 km/h

40 km/h

Max Tractive Force

77 kN

82 kN

87 kN

Moldboard Length x Height

3,660 x 610 mm

3,660 x 610 mm

4,270 x 610 mm

Moldboard Rotation Angle

360 degrees

360 degrees

360 degrees

Max Bank Cutting Angle

90 degrees

90 degrees

90 degrees

Max Blade Ground Clearance

450 mm

450 mm

460 mm

Max Cutting Depth

500 mm

500 mm

500 mm

Rear Ripper Shanks (Optional)

3 or 5 Shanks

3 or 5 Shanks

3 or 5 Shanks

Hydraulic System Pressure

18 MPa

18 MPa

20 MPa

Overall Dimensions (L x W x H)

8,900 x 2,600 x 3,400 mm

8,900 x 2,600 x 3,400 mm

9,300 x 2,600 x 3,400 mm

 

Machine Applications

Highway and Subgrade Preparation

Spreading aggregates, cutting road crowns, and shaping drainage ditches to precise cross-slope angles.

Mining and Haul Road Upkeep

Clearing loose debris, removing corrugated washboard ruts, and maintaining smooth haul routes for heavy dump trucks.

Commercial Site Development

Leveling sub-bases for logistics hubs, industrial parks, and agricultural field contouring.

Snow Clearing Operations

Mounted with front-plow attachments and side wings for high-speed snow removal on regional roads.

 

 

Configuration and Customization Options

Engine Variants: Regional Tier 2 / Tier 3 / Stage IIIa Cummins engines, with options for cold-start preheaters (-25 deg C operational rating).

 

Work Attachments:
Front Dozer Blade (2,740 mm width)
Rear Heavy-Duty Ripper (3-tooth or 5-tooth shank assembly)

Mid-Mounted Scarifier (11-tooth) Blade Guidance Alignment: Pre-wired mounting brackets and hydraulic integration ports for 3D GPS/GNSS automated leveling control systems.

 

Operator Environment: FOPS/ROPS certified enclosed cab with HVAC, air-suspension seating, and digital hydraulic status monitoring.

Construction Motor Grader

 

Small Motor Grader

 

Quality Assurance and Structural Compliance

Structural Integrity: Frame articulation joints and A-frame drawbars undergo robotic MAG welding and ultrasonic flaw detection (UT) on all primary load-bearing welds.

 

Hydraulic System Cleanliness: Main control valves, steering cylinders, and gear pumps are assembled in cleanroom conditions, followed by 100% high-pressure oil flushing (NAS 1638 Class 8 standard).

 

Factory Testing: Every machine undergoes a 4-hour continuous load test, including hydraulic relief valve calibration, brake hold testing on 20 deg inclines, and blade angle displacement verification.

 

International Standards: Certified under ISO 9001 quality management standards; CE compliance documentation available for global export configurations.

 

Export Logistics and After-Sales Support
 

Shipping Solutions

Available for RORO (Roll-on/Roll-off), Flat Rack containers, or partially dismantled 40HQ container packing to optimize ocean freight costs.

Spare Parts Availability

Stocked wearing parts (cutting edges, end bits, scarifier teeth, hydraulic filter cartridges) dispatchable within 72 hours via international air express.

Technical Documentation

Shipped with complete English schematic manuals, hydraulic line diagrams, parts books with OEM cross-references, and maintenance schedules.

Warranty Coverage

Standard 12-month or 2,000-operating-hour warranty covering engine block, transmission, drive axles, and hydraulic pumps.

 

 

FAQ

 

 

Q: Which engine options are available for different regional emissions standards?

A: We standardly equip these motor graders with Cummins 6BTA5.9 and 6CTA8.3 turbocharged engines meeting Tier 2 / Tier 3 / Stage IIIa regulations. For regions requiring specific fuel filtering due to local high-sulfur diesel, we integrate dual-stage water-separating fuel filtration systems.

Q: Can these graders be integrated with 3D GPS automatic leveling control systems?

A: Yes. Machines can be delivered factory-ready with pre-welded sensor mounts, hydraulic proportional valve interfaces, and wiring harnesses compatible with Topcon, Trimble, or Leica 3D grade control systems.

Q: How are wear parts like cutting edges sourced for ongoing maintenance?

A: The moldboards utilize standard hole-spacing configurations compatible with industry-standard heat-treated boron steel cutting edges. Replacement wear strips, side bits, and teeth can be ordered directly through our spare parts department or sourced locally using standard part numbers.

Q: What shipping method is recommended for international transport?

A: For minimum site reassembly, RORO or breakbulk shipping allows the machine to be driven directly onto and off the vessel. To reduce freight costs on long-distance routes, we offer factory breakdown procedures to fit the main machine, cabin, and attachments into a 40HQ container with step-by-step reassembly guides.

Q: What hydraulic components are used in the circle drive and steering systems?

A: Our graders utilize load-sensing hydraulic control valves, high-pressure gear pumps, and orbital steering units from qualified B2B component vendors. Hydraulic hoses feature double-braided steel wire reinforcement rated for working pressures up to 21 MPa.

Q: What is the standard production lead time for bulk or custom orders?

A: Standard production lead time is 20 to 30 days from deposit confirmation. Custom configurations, such as specialized front attachments, specific cabin HVAC units, or custom paint schemes, typically require 35 days.

China Machinery International Trading Co., Ltd. is one of the most experienced grader manufacturers and suppliers in China. We warmly welcome you to buy cheap grader made in China here from our factory. Quality products and reasonable price are available.

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