NC Rotary Table (Rear motor mounting type)

RNA-B type (ø250)

One of the most popular rear motor mounting type.
Suitable for mounting on a compact machine tool for space saving.

Features

  • Excellent performance
  • Fulfilling optional devices
  • Adopt high response clamp mechanism (Newly-developed)

Application

  • Heavy duty machining
  • Complex-shape parts machining

Specifications

Specifications Unit:mm RNA-251R,B
Spindle diameter   ø140
Table diameter   ø250
(option)
Center height   160
Center bore    
・Nose diameter   ø80H7 x 45
・Through-bore   ø50
Table T-slot width   12H8
Guide block width   18h7
Servo motors (For Fanuc)   αiF8
Inertia converted into motor shaft x10-3kg・m2 0.97
Net weight kg 95
Speed reduction ratio   1/90
Table max. rpm min-1 33.3
(Motor rpm: 3,000min-1)
Indexing accuracy
(the sum)		 arc sec 20
Repeatability arc sec 4
Clamp system   Pneumatic
Clamp torque/pneumatic pressure 0.49MPa N・m 1000
Strength of worm gears N・m 596
Allowable work weight    
・Vertical setting ( ) : with tailstock kg 125(250)

Dimensions

*Other sizes, RNA-161R,B/201R,B/321,R,B is availble. Click here if you are interested in. [ Specifications ] [ Dimensions ]