Our metalworking machines are of exceptional quality, utilizing high-strength alloy castings and imported precision spindles. After 72 hours of continuous load testing, they achieve an accuracy of 0.001mm. They are ISO9001 and CE certified, and offer a ten-year maintenance-free lifespan.We have a team of experts in mechanical design, CNC programming, and other fields, proficient in equipment manufacturing and the entire machining process, providing comprehensive process solutions.We support customization, ODM, and OEM services, allowing us to tailor parameters and automation modules to meet customer needs. We cover over 20 industry segments, allowing you to start research and development with just one machine.We offer one-stop services, including equipment selection, installation and commissioning, training, and lifetime maintenance. With 28 years of dedicated R&D experience, we have supplied over 12,000 machines to over 3,000 companies across a wide range of applications. We maintain a four-step quality inspection system: incoming raw material inspection → full production inspection → outgoing load testing → on-site customer acceptance. Each machine is accompanied by a detailed inspection report to ensure strict quality control.
-
![CNC Internal Grinding Machine]()
CNC Internal Grinding MachineThe IG200 High-Precision cnc internal grinding machine is a top-tier solution specifically designed for ultra-precise internal grinding applications. With its exceptional craftsmanship and precision -
![Internal Cylindrical Grinding]()
Internal Cylindrical GrindingThe IG150 CNC internal cylindrical grinding Machine is a high-precision solution designed for efficient, stable, and reliable internal diameter grinding operations. Engineered with cutting-edge -
![Internal Cylindrical Grinding Machine]()
Internal Cylindrical Grinding MachineThe IK500 CNC internal cylindrical grinding machine is a high-performance, two-axis CNC internal cylindrical grinder designed for precision machining of large-diameter bores ranging from Φ150 to Φ500 -
![Cnc Internal Grinder]()
Cnc Internal GrinderThis CNC internal grinder machine is equipped with a two-axis CNC system and features automatic dressing, compensation, and grinding functions. It can perform internal grinding on cylindrical,
Product Introduction
An internal cylindrical grinder is a precision machine tool specifically used for grinding the inner surfaces of workpieces (such as cylindrical holes, tapered holes, inner spherical surfaces, etc.). It grinds the inside of the workpiece using a small-diameter grinding wheel rotating at high speed to achieve extremely high dimensional accuracy (usually up to micron level), roundness, and surface finish to meet precision requirements such as internal part fit or fluid circulation.
Product Type
Conventional internal grinding machines
These are primarily operated manually or semi-automatically and are suitable for grinding small to medium-sized batches of simple internal holes (such as straight and tapered holes).
Universal internal grinding machines
These machines can be equipped with accessories to grind a variety of internal surfaces, including internal circles, end faces, and tapered surfaces, offering greater flexibility.
CNC internal grinding machines
These utilize computer numerical control systems to automatically complete complex program control and are suitable for high-volume, high-precision internal surface machining, such as precision bearing inner rings and hydraulic valve bores.
Product advantages
Superior Precision for Internal Surfaces
Internal grinding machines excel at achieving ultra-high dimensional accuracy and geometric precision for internal cylindrical features.
Versatility in Handling Complex Internal Geometries
Beyond standard straight bores, these machines can process a range of complex internal shapes, including Tapered holes, Stepped bores, Grooved or splined internal surfaces & Deep holes.
Adaptability to Various Workpiece Sizes and Materials
Internal grinders are available in diverse configurations to accommodate workpieces of different sizes—from small precision parts to large industrial components.
High Surface Finish Quality
By using fine-grit abrasives, precise coolant control, and advanced wheel dressing techniques, internal grinding machines can produce exceptional surface finishes.
Integration with Automation and Precision Controls
Modern internal grinders often feature CNC (Computer Numerical Control) systems, allowing for programmable setups, repeatable machining, and easy adjustment of parameters.
Efficiency in Finishing Hardened Parts
Internal grinding is particularly effective for finishing parts that have been heat-treated.
Application
Bearing Manufacturing
Grind the inner rings of rolling bearings to ensure precise diameter, roundness, and surface finish, critical for smooth rotation and load distribution.
Automotive Industry
Process internal bores of engine cylinders, gearbox housings, and hydraulic valve bodies, ensuring tight tolerances for proper component fit and fluid sealing.
Aerospace Engineering
Machine internal surfaces of turbine casings, hydraulic actuators, and fuel system components, meeting stringent requirements for dimensional stability under extreme conditions.
Medical Equipment Production
Fabricate internal bores of surgical instrument sleeves, artificial joint components, and precision pumps, where smooth surfaces and exact dimensions are vital for biocompatibility and functionality.
Hydraulics and Pneumatics
Finish the inner walls of hydraulic cylinders, pneumatic tubes, and valve spools to minimize friction and leakage, ensuring efficient fluid power transmission.
Tool and Die Making
Grind internal holes in dies, molds, and precision fixtures, achieving the high accuracy needed for consistent part replication in manufacturing processes.
Precautions For Use
Pre-operation Inspection
Before starting the machine, check the balance and integrity of the grinding wheel, the tightness and alignment of the workpiece fixture, and ensure the cooling system is unobstructed and clean.
Workpiece Handling and Clamping
Thin-walled or fragile workpieces require auxiliary support. Before clamping, deburr the inner surface and align the workpiece with the spindle axis.
Grinding Wheel Safety and Selection
Use an appropriate internal grinding wheel, do not exceed the rated speed, and regularly dress it to maintain sharpness and avoid overheating or damage.
Operational Safety
Wear protective equipment, stay away from the grinding area, start the machine at a low speed and then increase the speed. Allow the machine to stabilize before machining.
Grinding Parameters and Coolant
Use a gentle and even feed rate to ensure adequate cooling. Deep hole machining requires regular chip removal and cooling.
Post-operation Care
Allow the grinding wheel to come to a complete stop before removing the workpiece. Clean all machine components, inspect the grinding wheel, and store it properly.
Maintenance Checks
Regularly check spindle bearing wear, lubricate moving parts as required, and calibrate measuring tools to ensure accurate inspections.
FAQ
Q: Why does the inner hole of a workpiece taper after internal grinding?
A: Possible causes include: the grinding wheel axis is not parallel to the workpiece axis centerline, excessive feed rate causing grinding wheel runout, unstable axial positioning during workpiece clamping, or uneven grinding wheel wear. Recalibrate the axis, adjust feed parameters, or check the clamping method.
Q: What should I do if burns or cracks appear on the workpiece surface during grinding?
A: This is often caused by insufficient cooling, a dull grinding wheel (increased frictional heating), or excessive feed speed. Increase the coolant flow rate, dress the grinding wheel promptly to restore sharpness, and reduce the feed rate to avoid localized overheating of the workpiece.
Q: The grinding wheel is prone to clogging or breaking when grinding small-diameter deep holes. How can this be addressed?
A: Use a small-diameter, high-rigidity grinding wheel (such as a resin-bonded CBN wheel), reduce the grinding depth, and use intermittent feed. Improve cooling and chip removal (such as using high-pressure cooling nozzles) to prevent chip accumulation.
Q: How can I ensure the roundness accuracy of a workpiece after internal grinding?
A: Ensure the workpiece is securely clamped (e.g., using a tensioning mandrel to reduce deformation), the grinding wheel is well balanced, and a spark-free grinding phase is used to eliminate residual stress. If necessary, an online roundness measuring instrument can be used for real-time monitoring and adjustment.
Shanghai Antishicnc Machine Equipment Co., Ltd. is one of the most professional internal grinding machine manufacturers and suppliers in China, featured by quality products and low price. Please rest assured to wholesale high-grade internal grinding machine for sale here from our factory.
Cnc Internal Grinding Machine, Internal Cylindrical Grinding Machine, internal grinding machinePopular Products
