Rear Motor Mount Rotary Table

Ar-210B

TJR’s AR Series rear motor mount rotary table shares the same robust platform as the standard AR Series 4th axis rotary table, configured specifically for applications where a back-mounted motor better suits your machine’s work envelope or fixturing requirements. Available in sizes ranging from 125mm (4.92″) to 250mm (9.84″) face plate diameter.

Like all AR Series rotary tables, the rear mount configuration supports full 4th axis integration directly into the CNC machine control, or standalone indexing operation using TJR’s SAC (Single Axis Controller). Vertical and horizontal mounting positions are both supported, and right-hand and left-hand motor configurations are also available — all with a pneumatic braking system for secure positioning under load.

The radial-axial preloaded bearing system delivers the high rigidity needed for both light and heavy cutting operations, and the dual lead worm shaft and worm gear design maintains long-term indexing accuracy in both directions.

Specifications

Item / Model
Unit
AR-125B Request a Quote
AR-170B Request a Quote
AR-210B Request a Quote
AR-250B Request a Quote

Table Diameter

mm

Ø 125

Ø 170

Ø 210

Ø 250

Diameter of Table Central Hole

mm

Ø 35H7

Ø 67

Ø 67

Ø 67

Inner Diameter of Mandrel Sleeve

mm

–

Ø 40H7

Ø 40H7

Ø 40H7

Diameter of Center Through Hole

mm

Ø 25

Ø 40

Ø 40

Ø 40

Center Height (Vertical)

mm

110

135

160

160

Table Height (Horizontal)

mm

–

–

–

–

Table T-slot Width

mm

12H7

12H7

12H7

12H7

Guide Block Width

mm

14h7

18h7

18h7

18h7

Min. Increment

deg.

0.001

0.001

0.001

0.001

Indexing Precision

sec.

40

20

20

20

Repeatability

sec.

4

4

4

4

Clamping System (Pneumatic)

kg/cm2

6

6

6

6

Clamping Torque

kg-m

13

31

31

31

Servo Motor Model (FANUC)

Taper shaft

α2i / ß4is

α4i / α8i / ß8is

α4i / α8i / ß8is

α4i / α8i / ß8is

Servo Motor Model (MITSUBISHI)

Taper shaft

HF-75 / 105

HF-54 / 104

HF-54 / 104

HF-54 / 104

Speed Reduction Ratio

–

1：60

1：90

1：90

1：90

Max. Rotation Rate of Table (Calculate with Fanuc α Motor)

r.p.m

83.3

44.4

44.4

44.4

Allowable Inertia Load Capacity (Horizontal)

kg.cm.sec2

2

2.7

4.1

5.9

Allowable Workpiece Load (Vertical)

Vertical-Icon_S

kg

50

75

75

75

Allowable Workpiece Load (with Tailstock)

kg

100

150

150

150

Allowable Workpiece Load (Horizontal)

kg

–

–

–

–

Allowable Load with Rotary Table Clamping (F)

kgf

1000

1450

1450

1450

Allowable Load with Rotary Table Clamping (FxL)

kgf.m

45

100

100

100

Allowable Load with Rotary Table Clamping (FxL)

kgf.m

13

31

31

31

Strength of worm gears (Rotary axis)

kg.m

9

18

18

18

Net Weight (servo motor excluded)

kg

–

60

65

72