Centerless Stone Lapping Machine

for machining of inner and outer ring raceway for single and double-row taper and cylindrical roller bearings

Standard application range :
- Outer ring : OD 150 - 400 mm x Breadth 30 - 250 mm x Raceway taper angle 0° - 90°
- Inner ring : OD 150 - 400 mm x Breadth 30 - 250 mm x Raceway taper angle 0° - 90°

HN-400F

Main Features

  • Machining of inner and outer ring raceways for tapered and cylindrical roller bearings
  • Machining of inner ring for double-row tapered roller bearings
  • One-cycle automatic machine
  • As the machining range of the tooling is all limited and shared, the need for specialized tooling due to differences in workpiece size is reduced
  • Outer diameter roller centerless support system
  • Easy changeover
  • Machinable taper angle: 0-90°

Machine Specifications

1) Work piece
Inner/Outer ring raceway of single/double row cylindrical/taper roller bearings
2) Machining range
Outer ring O.D. 150 - 400 mm
Width 30 - 250 mm
Raceway taper angle 0 - 90°
Inner ring O.D. 150 - 400 mm
Width 30 - 250 mm
Raceway taper angle 0 - 90°
3) Work piece support system
O.D. roller centerless support system
4) Machining method
Infeed type, Traverse cut & plunge cut
5) Main spindle unit
Revolution 480 rpm (Max.)
Automatic multi-step change-over
Right/left adjustment amount Right 17 mm, Left 3 mm (against reference position)
Drive Motor Inverter control
Front/back movement unit
Movement amount 850 mm
Drive Motor AC servomotor
6) Stone lapping unit
Traverse unit
Movement amount 350 mm
Drive Motor AC servomotor
Angle adjustment unit
Movement amount 0 - 45° counterclockwise viewed from upside
motor drive
auto-clamping unit
Drive Motor AC servomotor
Oscillation unit
Frequency 2,000 fpm (Max.)
Automatic multi-step change-over
Amplitude Replaceable oscillation ring
Drive Motor AC servomotor
7) Stone head part
Pressure stroke 20 mm Pneumatic drive
Stone pressurization Electropneumatic regulator control/Back pressure control
Rough/Finish automatic multi-step change-over
8) Pressure roller unit
Clamp arm movement amount 40 mm Hydraulic drive
Movement amount in diameter direction 74 mm Motor drive
Movement amount in width direction 190 mm Motor drive
9) Roller support part
O.D. roller centerless support system
10) Machine size
(W)2,570×(D)2,630×(H)2,000 mm
11) Machine weight
7,500 Kg

Note : Specifications are subject to change without notice.