Parker T12 Series Hydraulic Motor T12-060 T12-080 Dual Displacement Bent-Axis Motors

Parker T12-060 / T12-080 Hydraulic Motor: Dual-Displacement Power for Crawler Excavator Travel Drives

A crawler excavator’s ability to traverse muddy job sites, climb steep grades, and pivot in confined spaces depends entirely on its travel drive system. At the heart of this system is the hydraulic motor—the component that converts hydraulic flow into the rotational torque that turns the tracks. The T12-060 hydraulic motor and T12-080 motors from Parker’s T12 series are engineered specifically for this mission. Based on the proven V12 bent-axis design and optimized as dual-displacement cartridge motors, the T12 series delivers the high starting torque, speed flexibility, and environmental toughness that crawler excavators demand on the world’s toughest work sites.

Technical Specifications – T12-060 / T12-080

Parameter	T12-060	T12-080
Max. Displacement	60 cm³/rev	80 cm³/rev
Continuous Pressure	420 bar (6,090 psi)	420 bar (6,090 psi)
Intermittent Pressure	480 bar (6,960 psi)	480 bar (6,960 psi)
Theoretical Torque @ 100 bar	95 Nm	127 Nm
Max Output Power	170 kW	N/A
Speed Range @ Full Stroke	3,100 – 4,400 rpm	3,100 – 4,400 rpm
Max Speed (min displacement)	Up to 7,900 rpm	Up to 7,900 rpm
Weight	~26 kg	~33 kg
Warranty	12 months	12 months
Technical PDF	www.baolilai-pump.com/contact_us/	www.baolilai-pump.com/contact_us/

Data derived from Parker T12 series technical documentation.

Why the T12-060 and T12-080 Excel in Crawler Excavator Travel Drives

The T12 series was purpose-built for track drives, with the T12-060 and T12-080 models offering distinct displacement options to match different excavator classes.

Dual-Displacement Flexibility
The T12’s two-displacement design allows a high ratio between high and low speed (maximum 3.33:1). In a crawler excavator, this means the motor can operate in high-speed, low-torque mode for travel between work areas, then shift instantly to low-speed, high-torque mode for climbing slopes or maneuvering in soft ground. The displacement change is controlled by an external hydraulic pilot signal, giving the operator seamless speed control without additional valves.

9-Piston Bent-Axis Design for High Starting Torque
Unlike swashplate designs, the T12’s 9-piston bent-axis configuration provides superior starting torque. This means the excavator tracks respond instantly when the operator pushes the travel lever, even on steep inclines or when the machine is fully loaded. The 9-piston layout also ensures exceptionally smooth operation, with minimal torque ripple during both acceleration and deceleration.

480 Bar Pressure Resilience for Extreme Loads
When an excavator pushes into a stockpile or pivots against an obstacle, hydraulic pressure spikes can reach 480 bar intermittent. The T12 hydraulic motor robust rotating group—featuring lightweight pistons with laminated rings and heavy-duty bearings—absorbs these shocks without internal leakage or housing deformation. The 420 bar continuous rating ensures sustained torque for long travel distances, even in high-ambient temperatures.

Built for Extreme Crawler Excavator Environments

Crawler excavators operate in some of the harshest conditions on earth, and the T12 series motor is designed to survive them.

High Operating Speeds for Rapid Positioning
Thanks to low-weight pistons and a compact rotating assembly, the T12 achieves speeds up to 7,900 rpm at minimum displacement. This allows the excavator to reposition quickly between digging cycles, reducing cycle times and improving productivity.

Contamination Defense for Dirty Worksites
The T12’s double shaft seals and fluorocarbon rubber high-temperature seals keep abrasive dust, mud, and water out of the motor’s internal cavities. This is critical for excavators working in mining, demolition, and heavy construction where contamination is constant.

Explosion-Proof Options for Hazardous Environments
For excavators operating in coal mines, chemical plants, or other hazardous locations, the T12 can be specified with spark-resistant internals and sealed housings meeting ATEX/MSHA standards.

Thermal Stability Across Temperature Extremes
The T12 operates reliably from sub-zero winter conditions to high-ambient engine compartment temperatures, with optional FV flushing valve blocks providing cooling flow when the motor runs at high speeds or high power levels.

Beyond Crawler Excavators – Applications Across Heavy Machinery

The same qualities that make the T12 series hydraulic motor exceptional for excavator travel drives make it the preferred choice across a range of heavy equipment:

Equipment Type	Recommended Model	Key Benefit
Crawler excavators (Hitachi, Kobelco, Hyundai)	T12-080	High starting torque for steep grades
Bulldozers (Caterpillar, Komatsu)	T12-080	480 bar intermittent for pushing loads
Skid steers & compact track loaders	T12-060	Compact size, high power-to-weight ratio
Forestry harvesters & forwarders	T12-060	9-piston smooth operation in rough terrain
Mining haul trucks	T12-080	Explosion-proof options available

Official manufacturer resources: hitachi.com | kobelco.com | hyundai.com

What You Get – Baolilai Support

12-month warranty – covers all manufacturing defects (pistons, cylinder block, valve plate, seals, bearings)

Free replacement parts – within warranty, we ship failed components at no cost (local labor not included)

Remote video support – factory engineers guide installation, troubleshooting, and repair via video call

Explosion-resistant construction – safe for hazardous environments

Contamination defense – double shaft seals resist abrasive dust and slurry ingress

Thermal endurance – proven performance from sub-zero to high-ambient conditions

FAQ – Parker T12-060 / T12-080 Hydraulic Motors

Q1: What’s the difference between T12-060 and T12-080?
The T12-060 offers 60 cm³/rev displacement with 95 Nm torque per 100 bar, ideal for compact excavators and skid steers where space is limited. The T12-080 offers 80 cm³/rev displacement with 127 Nm torque per 100 bar, providing higher torque for larger crawler excavators and bulldozers.

Q2: Is the T12 suitable for both open and closed circuit excavator systems?
Yes. The T12 series is based on the V12 design, which is intended for both open and closed circuits, making it compatible with most excavator hydraulic architectures.

Q3: What does the 12-month warranty cover?
The warranty covers all manufacturing defects, including piston seizure, cylinder block galling, valve plate erosion, seal leakage, and bearing failure under normal operating conditions.

Q4: Can the T12 operate on fire-resistant hydraulic fluids?
Yes. With optional FKM seals, the motor is compatible with HFC (water-glycol) and HFD (phosphate ester) fluids, making it suitable for underground mining and hazardous environment applications.

Q5: How does the free parts replacement work?
Within 12 months, if a covered part fails, send us evidence (photo/video). After verification, we ship the replacement part free. Remote video support helps your technician install it.

Q6: Where can I find official service manuals for Hitachi or Kobelco excavators?
Visit the manufacturer’s support portals: hitachi.com (Service & Support), kobelco.com (Parts & Service), or hyundai.com (Customer Support).

Summary

The Parker T12-060 and T12-080 hydraulic motors deliver dual-displacement flexibility, 420 bar continuous pressure (480 bar intermittent), 95–127 Nm theoretical torque per 100 bar, and a 3,100–4,400 rpm speed range. Engineered specifically for crawler excavator travel drives, bulldozers, and heavy construction equipment, they withstand pressure spikes, explosive dust, and extreme temperatures. Backed by a 12-month warranty, free replacement parts, and remote video support, they are the reliable hydraulic motors for demanding mobile applications. Download the full technical datasheet at www.baolilai-pump.com.

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Specificatio

Internal Number	Nameplate Model
3781189	T12-060-MT-CV-C-000-A-0-060/03
3781253	T12-080-MT-CV-D-000-A-0-080/04
3781354	T12-060-MT-CV-C-000-A-0-060/03
3783115	T12-080-MT-CV-D-000-A-0-080/05
3783193	T12-060-MT-CV-C-000-A-0-060/03
3783262	T12-060-MT-CV-C-000-A-0-060/02
3783670	T12-060-MT-CV-C-000-A-0-060/03
3785411	T12-060-MT-CV-C-000-A-0-060/04
3785705	T12-060-MT-CV-C-000-A-0-060/03
3785973	T12-060-MT-CV-C-104-A-S-055/01
3786208	T12-060-MT-CV-C-000-A-0-055/02
3786298	T12-060-MT-CV-C-000-A-0-050/02
3786697	T12-060-MT-CV-C-000-A-0-041/01
3787271	T12-060-MT-CV-C-000-A-0-046/01
3787309	T12-060-MT-CV-C-000-A-0-060/01
3787386	T12-080-MT-CV-C-000-A-0-080/04
3787404	T12-080-MT-CV-D-000-A-0-080/02
3787684	T12-080-MT-CV-C-000-A-0-080/02
3788271	T12-060-MT-CV-C-000-A-0-060/02
3788523	T12-080-MT-CV-D-000-A-0-080/04
3788809	T12-080-MT-CV-D-000-A-0-080/02
3789071	T12-060-MT-CV-C-000-A-P-060/01
3789144	T12-080-MT-CV-C-000-A-0-080/02
3789478	T12-080-MT-CV-C-000-A-0-080/05
3789556	T12-080-MT-CV-D-000-A-0-080/04
3789749	T12-080-MT-CV-D-000-A-0-048/02
3789951	T12-080-MT-CV-C-000-A-0-080/05
3795620	T12-060-MT-CV-C-000-A-0-060/03
3795635	T12-060-MT-CV-C-000-A-0-060/01
3795673	T12-060-MT-CV-C-000-A-0-060/02
3795790	T12-080-MT-CV-D-000-A-0-080/04
3796047	T12-060-MT-CV-C-000-A-0-060/03
3796390	T12-060-MT-CV-C-000-A-0-060/03
3796557	T12-080-MT-CV-D-000-A-0-080/05
3796601	T12-060-MT-CV-C-000-A-0-060/03
3797911	T12-060-MT-CV-C-000-A-0-060/02
3798827	T12-060-MT-CV-C-000-A-0-060/02
3798938	T12-060-MT-CV-C-000-A-0-060/02
3798980	T12-060-MT-CV-C-000-A-0-050/02
3799007	T12-060-MT-CV-C-000-A-0-060/02