A2FE Hydraulic Motor for 173-1685 212-0272-00 1751743 3732199 1597156 2762088 309-1916-01 Caterpillar Excavators Radiator Cooling Fan Motor

A2FE Hydraulic Motor: The Robust Heart of Cooling Systems in Caterpillar Excavators

In the demanding world of heavy equipment, efficient thermal management is not a luxury—it is a critical determinant of engine longevity and hydraulic system reliability. The radiator cooling fan, driven by a precise and durable hydraulic motor, plays a pivotal role in this process. For Caterpillar Excavators, the A2FE series fixed displacement axial piston motor is engineered to deliver the consistent, high-torque performance required for this essential auxiliary function. As a specialist manufacturer, www.baolilai-pump.com provides high-performance hydraulic components that meet the rigorous demands of OEM systems. For detailed technical schematics, view the PDF via www.baolilai-pump.com/contact_us/.

A2FE Technical Specifications

Parameter	Value Range
Displacement Range	28.1 – 355 cm³/rev
Operating Pressure	350 – 450 bar
Maximum Speed	2700 – 6900 rpm

Site	NG		28	32	45	56	63	80	90	107	125	160	180	250	355
Displacement geometric, per revolution	Vg	Cm3	28.1	32	45.6	56.1	63	80.4	90	106.7	125	160.4	180	250	355
Speed maximum	nnom	rpm	6300	6300	5600	5000	5000	4500	4500	4000	4000	3600	3600	2700	2240
	nmax	rpm	6900	6900	6200	5500	5500	6000	5000	4400	4400	4000	4000	−	−
Input flow at nnom and Vg	qv	L/min	177	202	255	281	315	362	405	427	500	577	648	675	795
Torque at Vg and Δp=350 bar	T	Nm	157	178	254	313	351	448	501	594	696	893	1003	1393	1978
Δp=400 bar	T	Nm	179	204	290	357	401	512	Nm	573	679	796	1021	1146	−
Rotary stiffness	c	kNm/rad	2.93	3.12	4.18	5.94	6.25	8.73	9.14	11.2	11.9	17.4	18.2	73.1	96.1
Moment of inertia of rotary group	JGR	Kgm2	0.0012	0.0012	0.0024	0.0042	0.0042	0.0072	0.0072	0.0116	0.0116	0.0220	0.0220	0.061	0.102
Maximum angular acceleration	α	rad/s2	6500	6500	14600	7500	7500	6000	6000	4500	4500	3500	3500	10000	8300
Case volume	V	L	0.20	0.20	0.33	0.45	0.45	0.55	0.55	0.8	0.8	1.1	1.1	2.5	3.5
Mass (approx.)	m	kg	10.5	10.5	15	18	19	23	25	34	36	47	48	82	110

Built for Unwavering Performance in Extreme Climates

Supported by a one-year warranty, the A2FE Hydraulic Motor for Caterpillar Excavator Radiator Cooling Fan is designed to operate flawlessly in the harshest environments. Its key advantage is exceptional resistance to thermal stress, pressure fluctuations from the fan load, and exposure to dust, moisture, and debris. This resilience is vital for machines working in scorching quarries, dusty demolition sites, or humid mining operations. Models like those corresponding to part number 173-1685 are built with robust materials and precision seals to ensure continuous cooling performance, directly preventing costly engine overheating and component failure.

A Critical Component Across the Caterpillar Equipment Universe

The reliability of the A2FE motor extends its application across the diverse Caterpillar (caterpillar.com) product ecosystem. Beyond excavators, this motor is integral to the cooling systems of other heavy machinery. In the agricultural sector, massive Cat Challenger tractors operate for long hours under heavy load; their cooling systems, potentially serviced with a component like 212-0272-00, depend on such reliable fan drive motors. In mining, the colossal Cat 797 haul trucks and large excavators generate immense heat; their high-capacity radiators require powerful and dependable fan drives, often associated with part numbers such as 1751743 and 3732199.

Similarly, in the construction sector, motor graders and soil compactors from Caterpillar must maintain optimal operating temperatures to ensure performance and emissions compliance. The precise speed and torque output of the A2FE hydraulic motor make it ideal for this controlled application. For material handlers and forestry equipment, consistent cooling is equally critical, with components like 1597156, 2762088, and 309-1916-01 representing the cross-platform application of this durable technology in maintaining system health across global fleets.

FAQ

Q1: Why is a hydraulic motor like the AA2FE preferred over an electric motor for heavy equipment cooling fans?
A1: Hydraulic drive systems offer superior power density and torque output in a compact package. They are inherently more resistant to environmental factors like high temperatures, moisture, and vibration—common on construction sites—and can be directly and efficiently powered by the machine’s main hydraulic system.

Q2: How does the AA2FE motor handle the variable cooling demands of an excavator working in different ambient temperatures?
A2: While the A2FE is a fixed displacement motor, its speed and thus cooling output are controlled by the machine’s hydraulic system via flow control valves or dedicated fan pump circuits. This allows the system to automatically adjust fan speed based on coolant temperature, ensuring efficient operation from cold mornings to peak afternoon heat.

Q3: Can this motor withstand the constant ingestion of dust and debris that clog radiator fins?
A3: Yes. The motor’s design includes robust sealing to protect its internal components. Its ability to maintain performance even when the fan load increases due to a partially blocked radiator—a scenario often indicated by a part like 2762088—is a testament to its overload capability and durability.

Q4: We need a replacement fan motor for our fleet, identified by Caterpillar part number 309-1916-01. Is this available?
A4: Absolutely. We supply high-fidelity hydraulic motors cross-referenced to a wide array of OEM part numbers. For precise compatibility and technical support for components like 309-1916-01 or 3732199, please consult our engineering team via www.baolilai-pump.com/contact_us/.

Product Model

Product Model No.	Application equipment brands	Application equipment No.
A A2F E 355 W6Z5 AL A2FE355	Caterpillar	173-1685
A2FE107/61L-VXLXX0-S AV A2FE107	Caterpillar	212-0272-04
A2FE107/61L-VXLXX0-S SV A2FE107	Caterpillar	212-0272-00
A2FE107/61W-VXLXX0-S AV A2FE107	Caterpillar	2124977
A2FE160/61W-VZL191J-K SV A2FE160	Caterpillar	370-2208
A2FE180/61W-VAL100 AV A2FE180	Caterpillar	1751743
A2FE180/61W-VAL100 SV A2FE180	Caterpillar	1751743
A2FE45/61L-VXLXX0-S AE A2FE45	Caterpillar	205-1821-00
A2FE45/61L-VXLXX0-S AV A2FE45	Caterpillar	205-1821-07 D8-T
A2FE63/61W-VAL100 AV A2FE63	Caterpillar	3732199
A2FE63/61W-VAL106 SV A2FE63	Caterpillar	2762088
AA2FE107/61W-VUX080-S AV A2FE107	Caterpillar	1597156
AA2FE107/61W-VUXXX6F-S AV A2FE107	Caterpillar	325-9776-02
AA2FE107/61W-VUXXX6-S AV A2FE107	Caterpillar	269-4749-01
AA2FE125/61W-VUXXX6F-S AV A2FE125	Caterpillar	252-5127-03 583T;D8T
AA2FE125/61W-VUXXX6-S AV A2FE125	Caterpillar	159-7162-02
AA2FE90/61W-VXL016F-S AV A2FE90	Caterpillar	309-1916-01
AA2FE90/61W-VXL016-S AV A2FE90	Caterpillar	191-9536
AL A2F E 355 W6Z5 AL A2FE355	Caterpillar	152-1134 NEW:173-1685

Specification