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2026-10-29 
Industry News 
Jiangsu Sharp Pump Co., Ltd. manufactures precision replacement stators for BN series progressive cavity pumps. Our Stators for BN series supplier range is engineered as a direct-fit, cost-effective alternative for plants that need to restore volumetric efficiency without modifying the pump casing or rotor interface.
We produce these stators in our Jingjiang, China facility with controlled elastomer processing and dimensional verification. The range is intended for standard industrial transfer, high-viscosity sludge handling, and other duties where the BN series pump must maintain stable sealing and pressure.
Direct-Fit Geometry and Interchangeability
Each stator is manufactured to the exact tolerances of BN series pumps. No adjustments or modifications are needed—remove the old stator and install ours for immediate operation. The internal geometry is designed to match the existing rotor profile, preserving the progressive cavity sealing line and volumetric efficiency.
- 100% direct fit guarantee for BN series pump casings
- Advanced internal geometry for consistent rotor-stator contact
- No re-machining or adapter plates required
- Compatible with standard BN series drive and coupling arrangements
For complete pump context, the stator works with the BN series progressive cavity pump and the corresponding Rotors for BN Series.
Elastomer Selection for Process Media
We supply BN series stators in four standard elastomer grades. The correct choice depends on the transferred liquid, operating temperature, and chemical exposure. Our team uses the application data you provide to recommend the most suitable material.
| Elastomer | Typical Media Fit | Application Notes |
|---|---|---|
| NBR (Buna-N) | Oil and grease-based fluids | General industrial transfer where hydrocarbon resistance is required |
| EPDM | Chemicals, hot water, weathering | Good resistance to polar solvents and outdoor exposure |
| Viton (FKM) | High temperatures and aggressive chemicals | Selected when elevated temperature or strong chemical resistance is required |
| PTFE | Extreme working conditions | For highly aggressive media or extreme temperature ranges |
Dimensional and Quality Control
Every stator undergoes a strict dimensional check and shore hardness verification before release. This confirms the elastomer has cured to the specified hardness and that the internal cavity matches the BN series rotor profile. We can provide a test report and material certificate with the shipment for project documentation.
- Dimensional inspection against BN series reference geometry
- Shore hardness verification on each production batch
- Material certificate available on request
- Factory test report for complete pump assemblies when applicable
Application Fit and Operating Boundaries
BN series stators are used in progressive cavity pumps across pulp and paper, food processing, environmental protection, oil and gas, chemical processing, and power generation. The stator is particularly relevant where the pump must handle high-viscosity sludge, shear-sensitive media, or fluids requiring stable low-pulsation flow.
We configure the stator material and geometry around the working point you specify. For high-viscosity sludge handling, the elastomer must resist both chemical attack and mechanical wear from solids. For chemical dosing, the material selection focuses on compatibility with the transferred liquid.
Customization and Replacement Support
If your BN series pump has a non-standard rotor profile or you need a stator for an imported pump model, we can produce a custom-matched stator. Send rotor or stator samples or drawings, and we will design the internal geometry to ensure a good match and performance. If samples are not available, we will specify the important dimensions required.
- Custom stator geometry based on samples or drawings
- Cost-effective replacement for imported BN series spare parts
- Material options beyond standard grades, including HNBR and silicon rubber
- Support for retrofit and upgrade projects
Installation and Maintenance
Because the stator is a direct-fit replacement, installation follows the existing BN series pump procedure. Remove the worn stator, clean the pump casing, and install the new stator without re-machining. We recommend inspecting the rotor condition at the same time; a worn rotor can accelerate stator wear even with a new elastomer.
Maintenance intervals depend on the media, temperature, and operating pressure. Our team can advise on expected stator life based on your application data and provide replacement recommendations before unplanned downtime occurs.
Information We Use to Configure Your Solution
To prepare a configuration and quotation, we ask for the following project inputs:
- Flow rate and discharge pressure required
- Transfer liquid name and chemical composition
- Working temperature range
- Existing BN series pump model or rotor/stator dimensions
- Sample or drawing if available for custom matching
With this information, we confirm the correct elastomer grade, stator geometry, and delivery scope for your maintenance or project requirement.
Frequently Asked Questions
Are you a factory or trading company?
We are a manufacturer located at No.113, Xingye Road, Chengnan Industrial Park, Jingjiang, Taizhou, Jiangsu Province, China. We produce progressive cavity pumps and spare parts including rotors, stators, coupling rods, and drive shafts in-house.
What stator materials do you offer?
We supply NBR, EPDM, FKM, HNBR, PTFE, and silicon rubber for stators, selected according to the transferred liquid and temperature. If you require a different material, we can quote based on your specification.
Can you customize a stator for our existing pump?
Yes. Send rotor or stator samples or drawings, and we will design a matching stator with confirmed geometry and performance. If samples are not available, provide the important dimensions and we will advise the required measurements.
Do you provide test reports and material certificates?
Yes. Complete pumps are tested with water after assembly, and we can provide a test report. A material certificate is also available for stator elastomers and other components.
What is the delivery period for BN series stators?
Most spare parts are in stock and can be delivered within 3 days. For non-stock stators, the typical delivery period is 1-2 weeks depending on the model and material. We ship small parcels by DHL/UPS/FEDEX and larger orders by sea LCL or air as needed.
Related Products and Categories
Our portfolio also includes NM series progressive cavity pump for applications with different operating ranges, interfaces or integration requirements.
