Fully Automatic Centerless O.D. Stone Lapping Machine
(double station machine)

for raceway of inner rings of miniature ball bearings

Standard application range :
- Inner ring : OD 3 - 10 mm x Breadth 2 - 7 mm x groove curvature 0.6 - 3.0 mm(diameter)

STK-20DB

Main Features

  • Infeed-type centerless stone lapping machine for inner ring raceways of miniature ball bearings
  • Double-station machine that enables stone lapping by dividing rough and finish machining into separate processes
  • Two-roller & one-shoe centerless support system

Machine Specifications

1) Machining range
O.D. 3 - 10 mm
Breadth 2 - 7 mm
Outer ring groove curvature(diameter) 0.6 - 3.0 mm
2) Machine cycle
Fully automatic
1st station rough finish
intermediate section work delivery unit
2nd station fine finish
3) Work piece support system
Two roller,one shoe centerless support system
4) Roller drive unit
AC servomotor drive
5) Work pusher unit
6) Stone head
7) Oscillation unit
Revolution Max. 3,000 r/min
AC servomotor drive
Oscillation angle ±15° (Max.)
8) Backing head unit
9) Upper roller open/close unit
Air cylinder drive
10) Air control unit
11) Tool in-out slid unit
AC servomotor drive
12) Approach slide unit part
AC servomotor drive
13) Delivery unit inside M/C system
14) Machine size
(W)1,375×(D)1,540×(H)1,750 mm
15) Machine weight
2,700 Kg

Note : Specifications are subject to change without notice.