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Crankshaft Grinder

-- Steady & Reliable Manufacturer --

Intro

Crankshaft grinder is the umbrella term for our full crankshaft grinding range — CNC production machines for shop-floor manufacturing, dedicated crankpin grinders, and portable units for on-site engine reconditioning. This page is the starting point for comparing which tier matches your setting and volume.

Core Capability

Every tier shares the same underlying job — bringing crankpins and main journals back to a round, in-tolerance dimension — but differs in automation level and whether the crankshaft comes to the machine or the machine goes to the crankshaft. Choosing the right tier is mainly a question of setting, volume and required precision.

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.

Tier Comparison

TierSettingDiameter RangeTypical RoundnessBest Fit
CNC crankshaft grinderShop floor, volume productionØ30–150mm≤0.002mmOEM/Tier-1 production
Crankpin (orbital) grinderShop floor, job-shop/mid-volumeØ30–120mm≤0.003mmRepair shops, remanufacturers
Portable crankshaft grinderOn-site / in the engineØ80–500mm0.01–0.02mmMarine/power-plant field service

Send your crankshaft drawing, expected volume and whether the work is shop-based or on-site, and we will point you to the matching product page and configuration.

Processing Scope Across Tiers

Across the range, crankshaft grinders handle main journal and crankpin grinding on automotive, marine, compressor and generator crankshafts from Ø30mm up to Ø500mm depending on tier, in forged steel, ductile iron or hardened alloy steel.

Choosing a Tier

Volume production plants generally need the CNC tier for repeatability; independent repair or remanufacturing shops often start with a dedicated crankpin grinder; field service and marine maintenance work is better served by a portable unit that avoids removing the crankshaft entirely.

Core Functions

  • Orbital/eccentric work-head or clamp system to follow the crankpin's off-center path
  • Wheel dressing, automatic on the CNC tier and manual on job-shop/portable tiers
  • In-process gauge feedback on the CNC tier for closed-loop size control
  • Micrometer dial infeed on job-shop and portable tiers for operator-controlled stock removal
  • Dynamic balance correction for the eccentric rotating mass at grinding speed

Quality Control

  • Tier-appropriate testing: CMM audit and in-process gauge calibration for the CNC tier, dial-gauge and trial-grind verification for job-shop and portable tiers
  • Wheel balance check performed across all tiers before shipment
  • Run-in test or trial grind on a sample workpiece prior to delivery
  • ISO9001-certified manufacturing with tier-specific warranty terms

FAQ

  • Q: Which crankshaft grinder tier is right for my shop?
  • A: If you run continuous volume production, the CNC tier fits best; independent repair or remanufacturing shops usually start with a dedicated crankpin grinder; if the crankshaft cannot leave the engine, the portable tier is the option.
  • Q: Can I start with a job-shop machine and move to CNC later?
  • A: Many customers do exactly this as volume grows; let us know your growth plan so we can recommend a starting configuration that fits your likely upgrade path.
  • Q: How does portable on-site accuracy compare with shop-floor tiers?
  • A: Portable units typically achieve 0.01–0.02mm roundness, which covers most reconditioning tolerances, while shop-floor CNC and job-shop machines reach tighter roundness on a removed crankshaft.
  • Q: Do you help decide between the different crankshaft grinder types?
  • A: Yes, send your crankshaft drawing, expected volume and shop-floor or field setting, and we will recommend the matching tier and configuration.
  • Q: What is the general lead time across the range?
  • A: Portable units typically ship fastest, job-shop crankpin grinders next, and CNC production machines take the longest due to automation and gauge integration — exact timing depends on the configuration chosen.

Equipment Configuration

  • Meehanite cast-iron bed and hydrostatic/hydrodynamic spindle bearings on shop-floor tiers
  • Lightweight clamp-on frame with adaptor rings on the portable tier
  • Servo-driven CNC axes on the production tier versus handwheel control on job-shop and portable tiers
  • Steady rests sized to the crankshaft length and tier selected

Where It Is Used

  • Automotive and light-truck engine crankshaft manufacturing
  • Marine diesel engine builders and shipyard repair
  • Compressor and generator set crankshaft production
  • Independent crankshaft regrinding and engine remanufacturing shops
  • Power-plant and offshore field maintenance teams

Automation & Selection Options

  • Tier selection guided by your production volume and shop-floor versus on-site setting
  • Custom throw-radius range and adaptor rings across tiers
  • Control brand options (Fanuc, Siemens) on the CNC production tier
  • Robot loading integration available on the CNC production tier
  • Configuration built around your crankshaft drawing rather than a fixed catalogue spec
  • 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 Crankshaft Grinder Manufacturers and Crankshaft Grinder 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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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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