Fully Automatic Centerless Stone Lapping Machine

simultaneou machining of inner ring raceway and rib face for single-row taper roller bearings

Standard application range :
- Inner ring : OD 100 - 300 mm x Breadth 20 - 100 mm x Raceway
taper angle Max 60°, rib face angle 7.5° - 23.5°

AN-300TF-NC

Main Features

  • Infeed system with selectable plunge or traverse machining
  • Inner diameter shoe/roller centerless support system provides good parallelism and squareness against the mounting reference plane
  • Capable of simultaneous machining of rib faces

Work piece: Taper Roller Bearing Inner Ring Raceway & Rib Face

Machine Specifications

1) Work piece
Inner ring raceway and flange of single-row taper roller bearings
2) Machining range
O.D. 100 - 300 mm
Width 20 - 100 mm
Raceway taper angle Max. 60°
Flange angle 7.5 - 23°
3) Work piece support system
I.D. Shoe & O.D. roller centerless support system
4) Machining method
Infeed type, Traverse cut & Plunge cut
5) Main spindle unit
Revolution 1,000 rpm (Max.)
Automatic multi-step change-over
Right/left movement amount Right 22.5 mm, left 2.5 mm (against reference surface)
Drive Motor Inverter control
6) Raceway stone lapping unit
Oscillation unit
Oscillation frequency 2,000 fpm (Max.)
Automatic multi-step change-over
Amplitude Replaceable oscillation ring
Drive Motor AC servomotor
Traverse unit
Stroke 150 mm
Drive Motor AC servomotor
Lifting unit
Stroke 150 mm Position detection mechanism by encoder
Drive Motor Inverter control
Angle adjustment unit
Angle adjustment amount Clockwise 0 to 30° viewed from machine front
Position detection mechanism by encoder and auto-clamping unit
Drive Motor Three-phase motor
7) Flange stone lapping unit
Oscillation unit
Oscillation frequency Max. 2,500 fpm
Automatic multi-step change-over
Amplitude Replaceable oscillation ring
Drive Motor AC servomotor drive
Angle adjustment unit Clockwise 7.5 - 23°
(positioning by manually adjustment)
Approach slide unit
Stroke 190mm
Drive Motor AC servomotor
8) Bore reference unit
I.D. shoe or I.D. roller centerless support system
Stroke 100 mm Hydraulic drive
Adjustment amount in width direction 150 mm Manual
9) Stone head
For raceway machining Grip type Back pressure control system
Automatic multi-step change-over (Pneumatic control)
Stroke 20 mm Pneumatic drive
For flange machining Slant, auto-slide type stone head
Stroke 50mm Pneumatic drive
Stone pressurization Pneumatic drive
Automatic multi-step change-over
10) Work carrier unit
Rotary actuator (hydraulic drive)
11) Machine size
(W) 2,260 ×(D) 2,600 ×(H) 2,032 mm
12) Machine weight
4,000 Kg

Note : Specifications are subject to change without notice.