Oil Pump Rotor Supplier
BLUE oil pump rotor offer good surface finish, tight dimensional accuracy and great postional tolerance to bring out the best performance of your engine exchange. We offer over 100 standard oil pump rotors and gears with no mold fees for you to choose from.
Oil Pump Rotors Shop in China
Oil pump rotors from BLUE are high quality and high precision, which can reduce noise, reduce friction loss and improve the working efficiency of the oil pump. You can purchase our oil pump rotors directly from our shop.
Powder Metallurgy Oil Pump Rotor
Oil pump rotors from China are of high quality and have served in developed countries in Europe and America for many years.
Oil Pump Inner Rotor
The oil pump inner rotors rotate with the outer gear to deliver the oil in the oil pump to the engine, ensuring smooth operation.
Sintered Gear Rotor for Oil Pump
Sintered oil pump gears have tight dimensional tolerances, parallelism and perpendicularity, and their mass production is cost-effective.
Sintered Oil Pump Rotor
Sintered oil pump rotor is produced by pressing and sintering metal powder; it is a green manufacturing process.
Powder Metal Oil Pump Rotor
Powder metal oil pump rotor uses metal powder as raw material, less material waste, and has tight torlerance.
Tractor Oil Pump Rotor
Tractor oil pump rotor manufactured by powder metallurgy allows the inner and outer rotors to be precisely connected.
What Is an Oil Pump Rotor?
An oil pump rotor is important rotating part of a trochoid or gerotor oil pump, widely used in automotive engines. It consists of an inner and outer rotor that form variable chambers to draw oil from the sump and send it under pressure to engine components, providing lubrication, cooling, and dependable operation.
Driven by the crankshaft through a transmission mechanism, the two parts rotate in sync, forming a series of enclosed chambers. On the intake side, as the chambers expand, a vacuum is created — drawing oil into the pump. As rotation continues, these chambers move to the outlet side, decrease in volume, and force the oil out under pressure.
Crucial to this process is the precision fit between the inner and outer rotor. To ensure consistent flow and reduce leakage, the radial clearance is kept tight — typically between 0.08 mm and 0.13 mm during assembly.
Oil Pump Rotor Production via Powder Metallurgy
The typical process of manufacturing oil pump rotors by powder metallurgy includes powder mixing, compaction, sintering, and secondary operations.
Mixing
Metal powder (usually an iron-based alloy) is first mixed with a binder such as zinc stearate or lithium stearate. These binders help the powder flow, enhance compressibility, and reduce the force required to eject the compacted part from the die.
Common oil pump rotor materials include: FC–0208–60, FN-0208-30, and FL-4205-45.
Compacting
The blended metal powder is compacted in a precision die at 400–800 MPa to form the green compact of the oil pump rotor. This compaction process defines the rotor’s basic geometry, including key profiles and dimensions.
Although compaction increases bulk density and forms the part, the green compact has low strength and remains fragile at this stage.
Sinteirng
The green compact is sintered in a controlled atmosphere at a temperature below the metal’s melting point.
For iron-based materials, the typical sintering temperature is 1120°C. During sintering, solid-state diffusion takes place, which bonds the metal particles together and improves the part’s density, strength, and structural integrity.
Secondary Operations
After sintering, oil pump rotors undergo secondary operations to achieve the required precision. Machining processes such as hard turning and grinding adjust the outer diameter and end face of the outer rotor and improve the flatness of the inner rotor.
Sizing process refines the cycloidal inner profile, the outer profile of the inner rotor, and the involute spline, ensuring dimensional accuracy.
Why Choose BLUE?
BLUE is your reliable choice for excellent oil pump rotors, offering tight tolerances, free mold design, fast delivery, and competitive pricing from China.
BLUE Quality Standards
BLUE assures your product quality with ISO 9001:2015 certified quality management system. We provide a one-year warranty on your oil pump rotors. Explore more about our high quality standard.
Standard Oil Pump Rotor Shop
BLUE provides sintered rotors for gasoline and diesel engines with quick delivery and no mold fees. Explore our online shop to find what exactly match yours.
Free Mold Design Support
With over 20 years of expertise in mold design, BLUE offers free, high-precision mold design services to meet your customized needs. Let our experience work for you!
BLUE High Quality Assurance
BLUE is ISO 9001: 2015 certified and applies the most stringent quality control measures throughout the manufacturing process of oil pump rotors.
We perform metallographic analysis of our products, dimensional and positional tolerance control, hardness, tensile and fatigue strength testing to ensure that our products meet higher quality standards.
In addition, we have perfect packaging capabilities to assurance that your oil pump rotors are delivered safely and intact, just like they were just produced.
These highest and strictest quality management measures ensure that each of your oil pump rotor has the precision, strength, and wear resistance to achieve the best engine performance.
Standard Oil Pump Rotors
BLUE has a wide range of oil pump rotor models, covering oil pumps for various motorcycles and cars.
We are committed to the standardization of powder metallurgy parts to improve production efficiency and eliminate mold costs.
Our oil pump rotors cover Toyota, Ford, Honda, BMW, Nissan, Volkswagen, Audi, Mazda, Suzuki, Kawasaki and other brands.
Free download of all our standard sintered oil pump rotors – just click the button below to signup!
Applications of Oil Pump Rotor
BLUE’s oil pump rotors have been applied in Weichai, Cummins, Honda, Toyota, and many other engines.
When these vehicles are driving at high speeds, the engines run violently and need lubricating oil protection. Therefore, the oil pump rotor is indispensable.
In addition, some mechanical equipment also needs lubricating oil to protect the engine. The oil pump rotor pumps out lubricating oil to ensure the smooth operation of the equipment.
Mechanical Properties of Oil Pump Rotors Materials
Here are some common mechanical properties of oil pump rotors materials. The inner rotor typically uses FN-0208-30, while the outer rotor uses FL-4205-45. Free to ask our team if you have any questions about materials.
| Model | Density | Tensile Strength | Hardness |
|---|---|---|---|
| FN-0208-30 | 6.70 g/cm3 | 310 Mpa | 63 HRB |
| FL-4205-45 | 7.10 g/cm3 | 460 Mpa | 70 HRB |
| FC-0208-50 | 6.70 g/cm3 | 410 Mpa | 73 HRB |
| FD-0205-50 | 6.95 g/cm3 | 540 Mpa | 76 HRB |
| FD-0208-55 | 6.90 g/cm3 | 540 Mpa | 83 HRB |
| FD-0405-60 | 7.05 g/cm3 | 710 Mpa | 85 HRB |
Sintered Oil Pump Rotor Manufacturing Equipment
By using precision powder metal molds, a range of high-tonnage powder compaction presses and sintering furnaces, our oil pump rotors could achieve near net shape with high quality.
- Compacting
- Sintering
- Inspecting
- Machining
- Packaging
Compacting
25T-150T Compacting Machines
Compacting
300T Compacting Machine
Compacting
Pressing Oil Pump Rotor
Compacting
Robot Grabbing
Sintering
Sintered Furnace
Sintering
Sintered Furnace
Sintering
Ready for Sintering
Sintering
Sintered Parts on Graphite Plate
Inspecting
CMM
Inspecting
HRA, HRB, HRC and HV Hardness Tester
Inspecting
Material Strength Tester
Inspecting
Powder Metallurgy Product Inspecting
Machining
EDM
Machining
EDM Controlling
Machining
Grinding Machines
Machining
CNC Machines
Packaging
Mixed Powder Warehouse
Packaging
Full inspection and Packaging
Packaging
Powder Metal Products Warehouse
Packaging
Stretch Film Packed on Pallet
FAQ's
Here are some of the questions we get asked often. If yours isn’t answered, don’t hesitate to contact us, we’re happy to help!
The rotor oil pump has the following advantages:
- Small size
- Light weight
- Compact structure
- Low noise during operation
- High oil suction vacuum
- Large oil pump volume
- Good oil supply uniformity
The oil pump rotor is important for oil transfer within the oil pump.
To maintain its performance, follow these precautions:
Inspect for Damage and Wear:
Regularly check the oil pump rotor for any signs of damage or wear that could affect oil supply.
Clean the Surface:
Keep the rotor surface clean to prevent contaminants from interfering with oil pump operation.
Use High Quality Oil:
Regularly replace or top up with high-quality oil to ensure proper lubrication of the oil pump rotor.
Get a Oil Pump Rotor Quote!
