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Grinding Machine for Pump Shaft

-- Steady & Reliable Manufacturer --

Intro

This grinding machine is set up for centrifugal and process pump shafts, where the drawing is dominated by bearing seats, seal and sleeve seats, impeller fits and the runout between them, on shafts that are often long and slender and made from stainless or duplex steel.

Core Capability

Hydraulic steady rests support the shaft between grinding positions, and the CNC program grinds every seat in sequence from the same centers. Runout between bearing seats and the finish on the seal seat are controlled by that single setup rather than by the operator re-checking each seat.

Premium Materials and Components

Materials and components are the most critical elements to affect the performance of the equipment.

We use high-quality raw materials and branded components to ensure that our high-performance machines have a long service life and short downtime.

  • External grinding wheel chuck
  • Flat grinding wheel chuck
  • Φ 400 or Φ 600 balance frame
  • M7130-5006 front bearing
  • Rapid advance and retreat cylinder
  • Pressure valve plate assembly
  • Feed box assembly
  • Overflow valve
  • Table control box
  • Grinding head box
  • Control panel assembly
Design for High Performance

The performance of a machine is the result of the combined effect of all its components.

Our technical team consists of experienced engineers and technicians who are not only proficient in the operation and maintenance of grinders, but also have a deep understanding of material properties and processing technology. This enables us to provide customers with customized solutions to meet their specific processing needs.

By deeply studying the design and manufacturing process of precision grinding machines and paying great attention to configuration and construction from the beginning, our R&D team is able to provide high-performance equipment.

Specification

ItemValue
ModelMK1325-P (pump shaft series)
Shaft diameter rangeØ20–200mm
Max. shaft length1500–3000mm
Bearing seat tolerance capabilityIT5 (h5 / k5 / m5 fits)
Runout between bearing seats≤0.01mm TIR
Seal seat surface finishRa0.2–0.4µm
Roundness accuracy≤0.002mm
Steady rests2–5 hydraulic units
Grinding wheel sizeØ500 x 50–63 x Ø203mm
CNC systemFanuc 0i-F / Siemens 828D
Main motor power11kW
Machine weight7–10 tons

Send the pump shaft drawing with fits, runout callouts and material grade so we can confirm centers, steady rest positions and wheel specification.

Shaft Features Covered

Bearing seats, mechanical seal and sleeve seats, impeller and coupling fits, shoulders and relief grooves, on shafts from Ø20–200mm and up to 3 meters long. Typical materials are 410/420 and 17-4PH stainless, duplex grades and alloy steel, with hardened shaft sleeves ground on the same machine.

Stainless and Coated Surfaces

Stainless and duplex steels load wheels and burn easily, so softer-bond wheels, generous coolant flow and a fine dressing cycle are standard recommendations. Thermal-sprayed or chrome-coated sleeves need diamond or CBN wheels and are specified separately at quotation.

Core Functions

  • CNC grinding of all bearing, seal and impeller seats in one clamping from the same centers
  • Hydraulic steady rests positioned by program along the shaft
  • Automatic wheel dressing between seats to hold size and finish
  • In-process gauge on critical seat diameters
  • Stored programs by pump model for fast changeover
  • Optional runout measurement between seats before unloading

Quality Control

  • Test grind on a sample pump shaft with seat tolerances and runout measured
  • Seal seat surface finish verified with a surface roughness tester
  • Steady rest pad contact checked to avoid marking finished seats
  • Wheel balance and spindle runout checked before shipment
  • ISO9001-certified manufacturing with documented warranty terms

FAQ

  • Q: How is runout between bearing seats controlled?
  • A: All seats are ground from the same centers in one clamping, so runout between them depends on the machine's alignment and steady rest setup, not on re-locating the shaft; typical results are ≤0.01mm TIR.
  • Q: Can it grind stainless and duplex pump shafts?
  • A: Yes, with a softer-bond wheel, high coolant flow and fine dressing; these materials are more prone to burning and wheel loading than carbon steel, so we recommend a test grind on your material.
  • Q: Can coated or hard-faced shaft sleeves be ground?
  • A: Yes, with a diamond or CBN wheel package; coating type and thickness determine the wheel, so share the coating specification at quotation.
  • Q: How is this different from your CNC cylindrical grinding machine for shafts?
  • A: The platform is similar, but this configuration is set up around pump shaft needs: seal seat finish, seat-to-seat runout, stainless materials and steady rest layouts for slender shafts.
  • Q: What is the typical lead time?
  • A: Standard configurations usually ship in 65–85 days; longer beds or a coated-sleeve wheel package may extend this to 90–110 days.

Equipment Configuration

  • Precision linear guideways on the wheel-head and table axes
  • Adjustable hydraulic steady rests with soft pads for finished surfaces
  • Heavy-duty tailstock with controlled thrust for slender shafts
  • Fine-filtration coolant system with high flow for stainless grinding
  • Choice of Fanuc or Siemens CNC control

Where It Is Used

  • Centrifugal, multistage and process pump manufacturers
  • Pump repair and overhaul shops regrinding worn shafts and sleeves
  • Submersible and vertical turbine pump shaft producers
  • Water, oil and gas, and chemical industry pump suppliers

Automation Options

  • Custom bed length for longer vertical-turbine and line shafts
  • Program templates for pump shaft families with similar seat layouts
  • Diamond or CBN wheel package for coated sleeves
  • Runout measuring station integrated into the cycle
  • Robot or gantry loading for repeat production runs
  • 35000 m²+
    Total Factory Area
  • 2003
    Was Founded In
  • 210+
    Precision Equipment
  • 45+
    Exporting Countries & Regions
Zhejiang Quanshun Machine Tool Co., Ltd.

Zhejiang Quanshun Machine Tool Co., Ltd.

Zhejiang Quanshun Machine Tool Co., Ltd. is a professional manufacturer of precision grinding machines. It is located in Zhuji, Zhejiang Province, the main economic development area of the Yangtze River Delta. It is 65km away from Hangzhou, 180km away from Shanghai, 60km away from Hangzhou International Airport, and 60km away from expressways such as Hangjinqu, Zhuyong, and Shaozhu, with convenient transportation and unique geographical location.

The company covers an area of 35000 square meters and a building area of 32000 square meters. Zhejiang Quanshun Machine Tool Co., Ltd. is a professional wholesale Grinding Machine for Pump Shaft Manufacturers and Grinding Machine for Pump Shaft Factory. It has a machine tool production base and a hydraulic parts production base. The main products are various specifications of ordinary (CNC) cylindrical grinding machines, CNC end face cylindrical grinding machines, automatic loading and unloading CNC (end face) cylindrical grinding machines, composite grinding machines，high-precision ordinary (CNC) cylindrical grinding machines, and we can design and develop various kinds of non-standard special grinding machines according to the needs of users and provide relevant technology, software, training services and automation solutions. Our company has complete product research and development capabilities, passed IS09001-2015 quality system and CE safety certifications, and was named "National High-tech Enterprise".In 2021, it was rated as a specialized and new small and medium-sized enterprise in Zhejiang Province. We also have self-export qualifications. Our company adheres to the concept of "quality first, reputation first, service first", so that our products have a good reputation in the market. At present, our products have been exported to more than 20 countries, such as the United States, Germany, Japan, and Southeast Asia.

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Certificate

Believe In Our Strength

Zhejiang Quanshun Machine Tool Co., Ltd. has more than 20 years of industry experience, we specialize in the manufacture of high-quality precision grinding machines.
  • Advanced manufacturing procedures.
  • Full quality management system.
  • Thoughtful after-sales service.

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