Web Menu

Product Search

Language

Share

Automotive Crankshaft Grinding Machine

-- Steady & Reliable Manufacturer --

Intro

The automotive crankshaft grinding machine is built for passenger-car and light-truck crankshaft production lines, with a twin-wheelhead layout that grinds two journals or pins at the same time to bring cycle time down to what an automotive takt requires.

Core Capability

Simultaneous grinding, in-process gauging and cycle data logging are designed around continuous multi-shift output, so a full 4-cylinder or 6-cylinder crankshaft can be finished at a predictable rate with the dimensional records automotive customers expect during supplier qualification.

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
ModelMQ8260-AT (automotive series)
Crankshaft length range300–900mm
Main journal diameter rangeØ40–80mm
Crankpin diameter rangeØ35–70mm
Throw radius range25–60mm
Wheelhead layoutTwin wheelhead (simultaneous two-feature grinding)
Grinding wheelØ600–750mm, CBN or conventional abrasive
Typical cycle time (4-cylinder)3–5 minutes per crankshaft
Positioning accuracy±0.001mm
Roundness accuracy≤0.002mm
CNC systemSiemens 840D sl / Fanuc 31i
Machine weightapprox. 16 tons

Cycle time depends on stock removal and the number of features per crankshaft; send the drawing and your line takt time so we can confirm the machine count needed to meet your output.

Workpiece Range

Handles forged steel and ductile iron crankshafts for 3- to 6-cylinder passenger-car and light-truck engines, 300–900mm long, with main journals of Ø40–80mm and crankpins of Ø35–70mm. Tolerance holds at IT5 with roundness ≤0.002mm across the batch.

Line Output

At 3–5 minutes per crankshaft, one machine delivers roughly 700–1,100 pieces per day on a three-shift basis, so most automotive lines run two or three machines in parallel or split pins and journals across stations, with the layout settled during quotation.

Core Functions

  • Twin-wheelhead simultaneous grinding of two journals or pins per pass
  • Closed-loop in-process gauge with automatic infeed compensation
  • Automatic wheel dressing triggered by part count or measured wheel wear
  • Cycle and dimensional data logging for supplier quality records and SPC
  • Program library for multiple crankshaft variants with quick changeover
  • Loader interface for connection to an automated line

Quality Control

  • Process capability (Cpk) data collected from the in-process gauge during production
  • Factory acceptance test (FAT) on the customer's own crankshaft sample
  • Gauge calibration cross-checked against CMM measurement before shipment
  • Pin-to-pin and journal-to-pin positional accuracy verified on a full crankshaft
  • ISO9001-certified manufacturing process with documented warranty terms

FAQ

  • Q: How does the twin wheelhead reduce cycle time?
  • A: Two wheelheads grind two features at once, such as two main journals or two pins, which cuts the number of grinding passes per crankshaft and is the main reason cycle time falls into the 3–5 minute range.
  • Q: How many machines do we need for our output target?
  • A: It depends on your takt time and the number of features per crankshaft; share your annual volume and crankshaft drawing and we will recommend the machine count and layout.
  • Q: Can the machine provide data for our customer's quality audits?
  • A: Yes, cycle and dimensional data logging is built in, and the export format can be adapted to the reporting your customer requires.
  • Q: How fast is changeover between crankshaft variants?
  • A: Once programs are saved, changeover is mainly a fixture and steady-rest adjustment plus a program call, usually under an hour for similar variants.
  • Q: What is the typical lead time?
  • A: Standard configurations usually ship in 100–130 days; multi-machine lines with loaders and traceability typically take 140–180 days.

Equipment Configuration

  • Two independent CNC wheelheads on hardened linear guideways
  • Hydrostatic or hydrodynamic wheel-spindle bearings for stable high-speed grinding
  • Integrated gauge heads wired into the CNC control loop
  • PLC networking for MES connection and part traceability
  • Choice of Siemens or Fanuc CNC control, common across automotive plants

Where It Is Used

  • Passenger-car engine crankshaft OEM plants
  • Tier-1 and Tier-2 automotive crankshaft suppliers
  • Light-truck and commercial vehicle engine crankshaft producers
  • Motorcycle and small-engine crankshaft manufacturers

Automation Options

  • Robot or gantry loader integration matched to your line takt time
  • Barcode or RFID reading for part-level traceability
  • Cpk and cycle data export formatted for your customer's quality system
  • Line layout design for two or three machines in parallel or in sequence
  • Program development for new crankshaft variants ahead of delivery
  • 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 Automotive Crankshaft Grinding Machine Manufacturers and Automotive Crankshaft Grinding Machine 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.

Contact Us >>

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.

Contact Us

Recommended Links
Grinding Machine for Automotive Industry Grinding Machine for Roll Grinding CNC Cylindrical Grinding Machine for Automotive Parts Pin Grinding Machine for Crankshaft Grinding Machine for Hydraulic Cylinder Grinding Machine for Aerospace Parts