Danfoss H1B Series Variable Displacement Hydraulic Motor H1B060/080/110/160/210/250

Wuhan Xinlaifu Hydraulic Equipment Co., Ltd. is one of the leading manufacturers and suppliers of Danfoss H1B Series Variable Displacement Hydraulic Motor H1B060/080/110/160/210/250 in China. With abundant experience, we warmly welcome you to buy high quality customized products at competitive price from our factory. Also, OEM&ODM service is available.

 

 

 

 

Danfoss H1B060 Bent Axis Variable Hydraulic Motor – Direct Upgrade Replacement for Series 51

If you are currently operating equipment with a Danfoss Series 51 motor-particularly the 51C060-you may have noticed that replacement units are becoming harder to source, and the platform itself no longer reflects the latest hydraulic efficiency standards. Danfoss designed the H1B series as the official full upgrade replacement for the original Series 51 motors. The H1B060 keeps all the key benefits of the 51C060 while delivering them in a more compact package with better efficiency.

The H1B060 is a variable displacement bent-axis axial piston motor with a maximum displacement of 60 cc/rev and a minimum displacement of 12 cc/rev. This 5:1 displacement ratio gives the motor exceptional speed and torque flexibility-from high-torque, low-speed operation at full displacement to high-speed, low-torque running at reduced displacement-all without changing the motor itself.

At the core of the H1B design is proven 32° bent-axis technology with zero-degree capability. The spherical piston design and optimized flow paths minimize internal losses, delivering higher overall efficiency than previous-generation platforms.

Pressure capability is another area where the H1B060 excels. It delivers 450 bar (6,527 psi) continuous differential pressure with 480 bar (6,962 psi) intermittent peak capability. With a maximum input speed of 3,600 rpm and theoretical flow up to 270 L/min, the H1B060 is built for demanding closed-circuit hydrostatic applications.

For operators of excavators, combine harvesters, wheel loaders, road rollers, and forestry equipment, the H1B060 represents a drop-in replacement for 51C060 units that delivers higher power density, better efficiency, and a smaller footprint.

 

 

2.1 32° Bent Axis Technology – The Efficiency Advantage

The H1B060 utilizes 32° bent-axis architecture with spherical pistons-a design that fundamentally reduces internal friction compared to swashplate designs. The zero-degree capability allows the motor to smoothly transition from full displacement to near-zero displacement on the fly, enabling seamless speed changes without torque interruptions or sudden machine behavior changes.

For the equipment operator, this translates to smoother machine control and measurable fuel savings. The large ratio from zero to 32 degrees leads to higher overall efficiency and directly supports compliance with modern emission regulations such as Tier 4 Final/Stage IV. In applications like combine harvesters-where the header drive must vary speed continuously as crop density changes-the H1B060's variable displacement capability means the engine only delivers the power actually required, not a fixed percentage wasted as bypass flow.

2.2 5:1 Displacement Ratio – One Motor, Multiple Speed Ranges

With a maximum displacement of 60 cc/rev and a minimum of 12 cc/rev, the H1B060 offers a 5:1 displacement ratio. This means a single motor can cover what might otherwise require multiple fixed-displacement motors or complex two-speed gearboxes.

Rated output speeds range from approximately 2,350 rpm at maximum displacement to 4,300 rpm at zero displacement. In practical terms: when your excavator needs high torque for digging through hard clay, the motor operates at or near full displacement. When the same machine travels at high speed across a job site, the motor reduces displacement to increase output speed-all without mechanical shifting or operator intervention beyond the control lever.

2.3 Pressure Capacity – 450 Bar Continuous, 480 Bar Peak

The H1B060 is rated for 450 bar (6,527 psi) continuous differential pressure and 480 bar (6,962 psi) intermittent peak. This places it at the top of the mobile hydraulic pressure spectrum.

What does this mean in real-world terms? For a wheel loader working a stockpile, the motor experiences instantaneous pressure spikes every time the bucket engages the material pile. The 480 bar peak margin ensures the motor does not bypass or lose torque under these transient loads. The 450 bar continuous rating means the motor can sustain full digging or winching power throughout a full work shift without thermal deration.

2.4 Compact Design – Smaller Footprint, Same Mounting Interface

The H1B060 is engineered with a one-piece integrated housing that minimizes overall unit length. Despite the reduced footprint, it retains the same mounting interface and shaft configuration as the Series 51 motors it replaces.

For fleet operators and maintenance teams, this means:

Drop-in replacement – no modifications to mounting brackets, couplings, or plumbing

Reduced inventory – one motor platform serves multiple machine types

Simplified conversions – each controller supports all H1B motor sizes

The motor is equipped with IP67 and IP69K rated electrical components, ensuring reliable operation in the harshest working environments-from mud and dust to high-pressure wash-downs. External shaft seals are easily accessible for maintenance without complete motor disassembly.

2.5 Multiple Control Options – Configured for Your Application

The H1B060 supports a range of control configurations:

Pressure compensator override (default = minimum displacement)

Electric proportional control (12V or 24V)

Two-position control

Hydraulic control

This flexibility allows the H1B060 to be tailored for specific applications-whether it's precise speed control for a crane winch, rapid response for an excavator swing circuit, or simple two-speed operation for a rough terrain forklift.

Q1: Is the H1B060 a direct replacement for the Series 51 51C060?

Yes. The Danfoss H1B series is designed as the full upgraded replacement for the original Series 51 motors. The H1B060 maintains the same mounting interface, shaft configuration, and porting as the 51C060, enabling drop-in installation without modifications to your existing brackets, couplings, or plumbing.

 

Q2: What is the displacement range of the H1B060?

Maximum displacement: 60 cc/rev. Minimum displacement: 12 cc/rev. This 5:1 ratio provides wide speed and torque flexibility within a single motor.

 

Q3: What are the pressure ratings for the H1B060?

Continuous differential pressure: 450 bar (6,527 psi)

Intermittent peak pressure: 480 bar (6,962 psi)

 

Q4: What is the maximum input speed and flow?

Maximum input speed: 3,600 rpm

Theoretical maximum flow: 270 L/min

 

Q5: What does "bent axis" mean and why does it matter?

Bent-axis refers to the motor's internal architecture-the cylinder block is angled at 32° relative to the output shaft. This design, combined with spherical pistons, reduces internal friction and improves efficiency compared to swashplate designs. The zero-degree capability allows smooth on-the-go shifting from full to minimum displacement.

 

Q6: What control options are available for the H1B060?

The H1B060 supports multiple control configurations including:

Pressure compensator override (with or without brake pressure defeat)

Electric proportional control (12V or 24V)

Two-position control

Hydraulic control

 

Q7: What mounting flange and shaft does the H1B060 use?

Mounting flange: Cartridge 2-Bolt (SAE-style)

Shaft: DIN 5480 splined shaft (W30x2x30x14x9g)

 

Q8: What is the weight of the H1B060?

The H1B060 weighs approximately 29.8 kg (65.7 lb).

 

Q9: What is the electrical protection rating?

The H1B060 features IP67 and IP69K rated electrical components, ensuring reliable operation in harsh environments including dust, mud, and high-pressure wash-downs.

 

Q10: What are the typical applications for the H1B060?

The H1B060 (and the broader H1B series) is widely used in:

Wheeled and crawler excavators (travel and swing drives)

Crawler and truck cranes (hoist and swing functions)

Combine harvesters (header drive)

Wheel loaders (propel)

Road rollers (vibration and travel)

Forestry equipment (harvesters, forwarders)

Drilling and pipe handling applications

 

Q11: Can the H1B060 be used in open-circuit systems?

Yes-with the addition of Danfoss's counterbalance valve (CBV) solution. Danfoss has introduced a counterbalance valve specifically designed for the H1B motor, enabling its use in open-circuit propel applications where smooth travel and controlled braking are required.

 

1. General Design Specifications (All Models)

Item	Technical Data
Construction	Bent-axis variable piston motor with spherical piston design
Rotation	Bi-directional
Port Standard	Main pressure ports: ISO split flange; Auxiliary ports: SAE straight thread O-ring boss
Installation	Arbitrary mounting position; The motor housing must be fully filled with hydraulic fluid
Operating Temperature	-40°C ~ 104°C; Intermittent peak: 115°C (max 1 minute per cycle)
Ingress Protection	IP67 (without connector), IP69K (with mating connector installed)
Vibration / Shock Resistance	30G vibration, 50G mechanical shock
Max Case Pressure	5 bar (72.5 psi)

 

2. Main Performance Parameters (By Frame Size, Official Test Data)

2.1 Displacement

Model	Max Displacement (cm³/r)	Max Displacement (in³/r)	Min Displacement (cm³/r)	Min Displacement (in³/r)
H1B060	60	3.66	12	0.73
H1B080	80	4.88	16	0.98
H1B110	110	6.71	22	1.34
H1B160	160	9.76	32	1.95
H1B210	210	12.81	42	2.56
H1B250	250	15.25	50	3.05

 

2.2 Output Speed (Unit: rpm)

Operating Condition	H1B060	H1B080	H1B110	H1B160	H1B210	H1B250
Rated Speed (32° max angle)	3600	3200	2900	2600	2350	2200
Rated Speed (6° min angle)	5900	5300	4800	4250	3850	3650
Limit Speed (0° zero displacement)	6600	5950	5350	4750	4300	4050
Max Intermittent Speed (32°)	4500	4100	3700	3300	3000	2800
Max Intermittent Speed (6°)	7250	6600	5950	5250	4800	4500
Max Intermittent Speed (0°)	7950	7200	6500	5750	5250	4900

 

2.3 Pressure Ratings (Uniform for All Sizes)

Pressure Type	Value	Unit
Rated Differential Pressure	450	bar (6527 psi)
Intermittent Peak Pressure	480	bar (6962 psi)
Rated Case Pressure	3	bar (44 psi)
Min Case Pressure	0.3	bar (4 psi)

 

2.4 Power, Flow & Torque

Model	Corner Power (kW/hp)	Theoretical Flow @ Max Displacement (L/min)	Torque per Bar (N·m/bar)
H1B060	266 / 357	216	0.96
H1B080	321 / 430	256	1.27
H1B110	396 / 531	319	1.75
H1B160	513 / 689	416	2.55
H1B210	609 / 817	504	3.34
H1B250	684 / 917	550	3.98

 

2.5 Weight & Case Volume (Electric Proportional Control Version)

Model	SAE Flange Weight (kg)	DIN Flange Weight (kg)	Cartridge Weight (kg)	Case Volume (L)
H1B060	29.8	28.3	26.9	0.9
H1B080	34.8	34.4	33.0	1.0
H1B110	48.8	45.0	41.8	1.4
H1B160	61.9	59.3	54.7	2.7
H1B210	81.0	75.0	-	2.8
H1B250	87.0	79.6	-	4.1

 

 

3. Model Code Explanation (Official Standard)

Take the standard format H1-B-XX-XX-XX…… as reference:

H1: Danfoss H1 common platform series;

B: Bent-axis variable displacement hydraulic motor;

060/080/110/160/210/250: Frame size (corresponding to maximum displacement);

4th digit A: Version A (mainstream version of H1B series);

5th digit A: Port configuration (inch standard, compliant with ISO 11926-1);

Control Codes:

L1/L2: 12V/24V electric proportional control, de-energized = maximum displacement;

E1/E2: 12V/24V electric two-position control;

DH/HE/HF: Hydraulic proportional / two-position control;

TA/TADA: Equipped with Pressure Compensator Override (PCOR) function;

Suffix Digits: Custom parameters including minimum displacement setting, flushing valve flow, PCOR pressure threshold, flange/sensor type, paint & nameplate etc..

4. Accessory Specifications

Loop Flushing Valve: Standard cracking pressure 16 bar, optional flow rates: 10/20/30/40/50 L/min;

Speed Sensor: Two types (4.5–8 VDC, 7–32 VDC), non-contact detection, no calibration required;

Solenoid Coil: 24V coil: resistance 34.5Ω, rated current 500mA; 12V coil: resistance 8.4Ω, rated current 1050mA.

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