Tsudakoma Rotary Tables and Indexers

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Tsudakoma Rotary Tables

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RNCM SERIES
ROTARY TABLES
  Tsudakoma RNCM Series Rotary Tables  

RNCV SERIES TABLES • RNCM SERIES TABLES

RNCM-251 • 301 • 401 • 501 • 631 SPECIFICATIONS
Model RNCM-251R,L RNCM-301R,L RNCM-401R,L RNCM-501R,L RNCM-631R,L
Table diameter 250 320 400 500 630
Center height 160 210 255 310 400
Center bore Nose dia. 40H7 40H7 40H7 50H7 60H6
Thru dia. 32 40 40 50 60
Big Bore Option - - - - 180H7
Table T-slot width 12H7 14H7 14H7 18H7 18H7
Guide block width 18h7 18h7 18h7 18h7 18h7
Servo motor-Fanuc*-3000rpm Alpha 8i Alpha 12i Alpha 12i Alpha 12i Alpha 12i
Net Weight                kg (lbs) 75 (165) 200 (440) 300 (660) 450 (990) 800 (1,760)
Speed reduction ratio 1/180 1/360 1/180 1/180 1/180 1/180
Max. table rotation speed
with 3000 rpm motor		 16.7 8.3 16.7 16.7 16.7 16.7
Indexing accuracy  (arc sec.) ±7.5
Repeatability         (arc sec.) ±2
Clamp system Hydraulic or Air-hydraulic (optional)
Clamp torque@ 500psi    Nm 490 (361ft.lbs.) 833 (614 ft.lbs.) 1,764 (1300 ft.lbs.) 2,450 (1806 ft.lbs.) 4,410 (3250 ft.lbs.)
Allowable wheel torque   Nm 470 (346 ft.lbs.) 764 (563 ft.lbs.) 1,666 (1228 ft.lbs.) 2,450 (1806 ft.lbs.) 4,116 (3033 ft.lbs.)
Allowable
work weight
    kg (lbs)		 Vertical
[  ] =
tailstock		 100 (220)
[250 (550)]		 150 (330)
[350 (770)]		 200 (440)
[500 (1,100)]		 250 (550)
[600 (1,320)]		 400 (880)
[800 (1,760)]

Hor.

 250 (550) 350 (770) 500 (1,100) 600 (1,320) 800 (1,760)
Allowable
load when
table
clamped		 F
N (lbf)		 19,600
(4,390)		 29,400
(6,586)		 39,200
(8,781)		 49,000
(10,976)		 49,000
(10,976)
FxL
Nm
(ft lbs)		 490
(361)		 833
(614)		 1,764
(1,300)		 2,450
(1,806)		 4,410
(3,250)
FxL
Nm
(ft lbs)		 931
(686)		 1,568
(1,156)		 2,450
(1,806)		 3,430
(2,528)		 7,840
(5,778)

  *Other motors & rpm available • specification subject to change without notice • Dimensions = mm

RNCM-251 • 301 • 401 • 501 • 631 DIMENSIONS
Tsudakoma Rotary Tables

RNCM-251 • 301 • 401 • 501 • 631 ACCURACIES

Inspection Items • Dimensions = mm

 RNCM-251 • 301 RNCM-401 • 501 RNCM-631
Std. Scale Std. Scale Std. Scale
Table top flatness (concave) OAL - 0.01 0.01 0.02 0.01 0.03 0.02
Table top runout - - 0.015 0.01 0.015 0.01 0.02 0.01
Parallelism of table top to
frame bottom		 OAL Hor. 0.02 0.01 0.02 0.01 0.03 0.02
Center bore runout Spindle nose - 0.01 0.005 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 0.03 0.02
Perpendicularity of table top to
frame bottom guide blocks		 OAL Vert. 0.02 0.01 0.02 0.01 0.03 0.03
Indexing accuracy      (arc sec.) - - ±7.5 ±5 ±7.5 ±4 ±7.5 ±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 0.02 0.02
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 0.02 0.02

RNCM-251 • 301 • 401 • 501 • 631 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
RNCM-251 I 4 50 ~ 125 18 25 12 80 12 33 35 22 21 11 65 40 28 16
RNCM-301 I 4 55 ~ 127 18 30 15 90 16 31 43 25 21 11 70 46 28 16
RNCM-401 I 4 55 ~ 155 18 30 15 90 16 31 43 25 21 11 70 46 28 16
RNCM-501 I 4 60 ~ 194 18 40 20 110 18 42 50 25 21 11 70 46 28 16
RNCM-631 II 4 90 ~ 255 18 40 18 63 18 15 30 28 21 11 105 60 28 16
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