Gear grinding center YT7226G/YT7226

verticalCNChigh-precision

Overview
The machine is designed for precision gear grinding in industries such as new energy vehicles, automatic transmissions and passenger cars. It achieves batch-processing accuracy up to GB/T10095.1-2008 grades 4–5.

Main performance and features

• Thirteen-axis, five-link CNC worm grinding machine; grinding line speed can be stably maintained above 63 m/s.
• Dual-workpiece main spindles reduce auxiliary cycle time to under 5 seconds, significantly improving production efficiency.
• The machine uses a high‑precision end-face gear plate with a hydraulic floating tightening device for accurate positioning and locking during table exchange; front and rear table machining consistency is within 0.005 mm.
• Bed circulation cooling thermal balance system applies different oiling strategies during machining and idle states to balance internal temperature and reduce thermal deformation.
• Machine software supports complex profile modifications: arbitrary lead modifications, tooth-surface twist compensation, point dressing (arbitrary tooth-profile dressing), patterned tooth-surface grinding, double pressure-angle asymmetric gear grinding, small taper gear grinding, and more.

CNC system and automation

• Equipped with Siemens 840Dsl/one CNC; multi-channel control platform flexibly manages the CNC axes.
• Full automation for automatic workpiece clamping, automatic wheel dressing, high-speed gearing, automatic grinding teach, automatic dressing teach, automatic allowance distribution and automatic grinding cycles.
• Operator interface uses the manufacturer's proprietary HMI (zero programming) enabling dialog, gear parameter calculation and automatic program generation.

Applicable industries
Precision batch grinding of gears for new energy vehicles, automatic transmissions, passenger cars, and similar sectors.

Main technical specifications (table)
Index | Specification | Unit | Value
Model | | | YT7226G / YT7226
1 | Maximum workpiece diameter | mm | 260
2 | Maximum module | mm | 5
3 | Grinding spindle max speed | r/min | 10000 / 6100
4 | Workpiece spindle max speed | r/min | 3000 / 1600
5 | Distance from wheel center to table rotation center | mm | 115 ~ 350
6 | Wheel maximum mounting size | mm | Φ220×Φ76.2×160 / Φ275×Φ160×160
7 | Roller maximum mounting size | mm | Φ140×Φ52×40 / Φ123×Φ52×40
8 | Grinding spindle power | kW | 28.5 / 16

Characteristics / technical specifications

• Model: YT7226G / YT7226
• Maximum workpiece diameter: 260 mm
• Maximum module: 5 mm
• Grinding spindle max speed: 10000 / 6100 r/min
• Workpiece spindle max speed: 3000 / 1600 r/min
• Distance from wheel center to table center: 115 ~ 350 mm
• Wheel max mounting sizes: Φ220×Φ76.2×160 or Φ275×Φ160×160
• Roller max mounting sizes: Φ140×Φ52×40 or Φ123×Φ52×40
• Grinding spindle power: 28.5 / 16 kW
• Grinding line speed: stable above 63 m/s
• Dual-workpiece spindle design; auxiliary cycle time ≤ 5 s (significant capacity increase)
• Front/rear table positioning and locking consistency: ≤ 0.005 mm
• Bed circulation cooling thermal balance system to reduce thermal deformation
• CNC: Siemens 840Dsl/one; supports extensive automation and profile-modification functions