Electric Bus Power Steering Oil Pumps

If you're looking for the electric bus power steering oil pumps, welcome to wholesale the product from our factory. As one of the leading manufacturers and suppliers in China, we will offer you the best service and fast delivery. Now, check the quotation with our seller.

 

 

The Electric Bus Power Steering Oil Pump is an ECU-controlled hydraulic pump assembly designed to deliver efficient, precise steering assist for electric buses and other commercial vehicle platforms. Rather than relying on a traditional oil-can design, the pump integrates a compact permanent magnet motor with a precisely engineered vane pump structure - improving reliability while reducing overall size.

 

The pump line is available across multiple power ratings - from 0.5kW to 5kW - allowing the assist output to be matched to the specific torque and flow requirements of different bus and commercial vehicle applications.

 

 

 

NFNL502 Series - Electrical & Steering Pump Parameters

Model	Power (kW)	Voltage (V)	Current (A)	Rated Speed (r/min)	Rated Torque (N·m)	Max Pressure (MPa)	Flow (L/min)	Oil Inlet	Oil Outlet
NFNL502-1.5	1.5	285	3.5	1200	11.95	18	14	M27×1.5	M18×1.5
NFNL502-2.2	2.2	285	5.1	1200	17.5	18	17	M27×1.5	M18×1.5
NFNL502-3.0	3.0	225	8.5	1500	19.1	18	20	M27×1.5	M18×1.5

 

12V Intelligent Integrated Pump Series - Dimensions & Applicable Pressure

Model	External Dimensions	Installation Dimensions	Weight	Applicable Pressure	Max Flow Rate
0.5KW	L173×W130×H290	L46×W86mm	6.5KG	Below 11MPa	10L/min
1.5KW (110#)	L280×W151×H175	L87×W146mm	12KG	Below 11MPa	10L/min
1.5KW (11A)	L330×W200×H210	L140×W160mm	17KG	Below 13MPa	12L/min
1.5KW (334 series)	L334×W186×H181.5	L87×W146mm	13KG	Below 13MPa	10L/min
2.2KW	L310×W200×H230	L140×W160mm	17.5KG	Below 14MPa	13L/min
3KW (360 series)	L360×W230×H240	L140×W190mm	25KG	Below 19MPa	19L/min
3KW (430 series)	L430×W230×H240	L140×W190mm	23.5KG	Below 19MPa	19L/min
5KW	L360×W230×H240	L140×W190mm	25KG	Below 20MPa	28L/min

 

 

 

 

Designed primarily for passenger buses, this steering pump also supports a range of commercial and heavy-duty platforms, including:

Passenger Buses - precise, reliable steering assist for daily route operation

New Energy Heavy Trucks / Tractors / Dump Trucks - durable steering support under heavy-load conditions

 

 

Ready to Upgrade Your Steering System?

From 0.5kW to 5kW, NF's electric power steering oil pumps deliver reliable, low-noise steering assist for buses, heavy trucks, and commercial vehicle platforms - built for durability, not just rated numbers.

 

Contact now

 

 

Q1. What power ratings are available for this steering pump?
The pump line ranges from 0.5kW to 5kW, allowing the assist output to be matched to different vehicle torque and flow requirements.

 

Q2. What is the maximum operating pressure?
Depending on the model, applicable pressure ranges from below 11MPa up to below 20MPa. See the technical specifications table for exact values by model.

 

Q3. What protection rating does the pump have?
The pump is rated IP68, suitable for dust and water exposure in undercarriage environments.

 

Q4. How is the pump different from a traditional steering pump design?
Instead of a traditional oil-can housing, this pump uses a unique integrated structure that combines insulation and shock absorption in a single part, improving reliability and reducing failure points.

 

Q5. Does the pump have any electrical interference protection?
Yes. The pump has high EFT (electrical fast transient) immunity, helping maintain stable operation near motor controllers and other high-frequency switching equipment.

 

Q6. What vehicles is this pump suitable for?
The pump is designed primarily for passenger buses, and also supports new energy heavy trucks, tractors, and dump trucks.

 

Q7. Is the pump noisy during operation?
No. The pump is designed for low-noise operation, which also simplifies installation without additional NVH tuning.

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