Tsudakoma Rotary Tables and Indexers

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Tsudakoma Rotary Tables

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RB SERIES
ROTARY TABLES
  Tsudakoma RB Series Rotary Tables  

RB-R,L SERIES TABLES • RB-K SERIES TABLES • RNCK-631 TABLE

RB-250 • 300 • 400 • 500 SPECIFICATIONS
Model RB-250R,L RB-300R,L RB-400R,L RB-500R,L
Table diameter 250 320 400 500
Center height 160 210 255 310
Center bore Nose dia. 95H7 130H7 190H7 220H7
Thru dia. 71 101 151 182
Table T-slot width 12H7 14H7 14H7 18H7
Guide block width 18h7 18h7 18h7 18h7
Servo motor-Fanuc*-3000rpm Alpha 8i Alpha 12i Alpha 12i Alpha 12i
Net Weight                kg (lbs) 100 (220) 180 (396) 300 (660) 550 (1,210)
Speed reduction ratio 1/90 1/90 1/120 1/180
Max. table rotation speed
with 3000 rpm motor		 33.3 33.3 25 16.7
Indexing accuracy  (arc sec.) ±7
Repeatability         (arc sec.) ±2
Clamp system Hydraulic or Air-hydraulic (optional)
Clamp torque@ 500psi    Nm 980 (722 ft.lbs.) 2,450 (1,806 ft.lbs.) 4,200 (3,095 ft.lbs.) 6,100 (4,496 ft.lbs.)
Allowable wheel torque   Nm 581 (428 ft.lbs.) 931 (686 ft.lbs.) 1,666 (1228 ft.lbs.) 3,276 (2,414 ft.lbs.)
Allowable
work weight
    kg (lbs)		 Vertical
[  ] =
tailstock		 150 (330)
[300 (660)]		 200 (440)
[400 (880)]		 250 (550)
[500 (1,100)]		 250 (550)
[600 (1,320)]

Hor.

 300 (660) 400 (880) 500 (1,100) 600 (1,320)
Allowable
load when
table
clamped		 F
N (lbf)		 19,600
(4,390)		 29,400
(6,586)		 39,200
(8,781)		 49,000
(10,976)
FxL
Nm
(ft lbs)		 980
(722)		 2.450
(1,806)		 4,200
(13,095)		 6,100
(4,496)
FxL
Nm
(ft lbs)		 980
(722)		 3,626
(2,672)		 5,880
(4,334)		 5,880
(4,334)

  *Other motors & rpm available • specification subject to change without notice • Dimensions = mm
For table diameters larger than 500mm, please go to the RNCM and RNCV pages.

RB-250 • 300 • 400 • 500 DIMENSIONS
Tsudakoma Rotary Tables

RB-250 • 300 • 400 • 500 ACCURACIES

Inspection Items • Dimensions = mm

 RB-250 • 300
RB-250K • RB-300K		 RB-400 • RB-400K
RB-500 • RB-500K
Std. Scale Std. Scale
Table top flatness (concave) OAL - 0.01 0.01 0.02 0.01
Table top runout - - 0.015 0.01 0.015 0.01
Parallelism of table top to
frame bottom		 OAL Hor. 0.02 0.01 0.02 0.01
Center bore runout Spindle nose - 0.01 0.005 0.01 0.005
Perpendicularity of table top to
frame bottom		 OAL Vert. 0.02 0.01 0.02 0.01
Perpendicularity of table top to
frame bottom guide blocks		 OAL Vert. 0.02 0.01 0.02 0.01
Indexing accuracy      (arc sec.) - - ±7 ±4 ±7 ±4
Parallelism of centerline between
rotary table and tailstock to frame
bottom guide blocks		 Per 300mm Vert. 0.02 0.01 0.02 0.01
Height difference of both center lines of rotary table and tailstock
(Tailstock center line should be higher)		 - Vert. 0.02 0.01 0.02 0.01

RB-250 • 300 • 400 • 500 CLAMPING BLOCK
Model Type Quantity Available
T-slot pitch		 Available
T-slot

Dimensions = mm
A B C D E F G H I J K L M
RB-250 I 4 50 ~ 125 18 25 12 80 12 33 35 22 21 11 65 40 28 16
RB-300 I 4 55 ~ 127 18 30 15 90 16 31 43 25 21 11 70 46 28 16
RB-400 I 4 73 ~ 193 18 30 15 90 16 31 43 25 21 11 70 46 28 16
RB-500 I 4 60 ~ 194 18 40 20 110 18 42 50 25 21 11 70 46 28 16
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