Asia & Pacific

Asia & Pacific

Nabtesco Precision Equipment Company

RV

Nabtesco Precision Equipment Company

RV

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    Introduction

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GearheadRA-A

Specialized gearhead for machine tools(Case rotating type)

The RA series is a gearhead type design for use mainly by machine tool manufacturers. This model enables precision indexing with case rotation. The RA series is widely used in ATC magazines, ATC arms, APCs, and turrets. Much like the RD series, this product can be used in a wide variety of applications in addition to those mentioned above.

Product Features

  • Compactness
  • Case capable revolution
  • Backlash less than 1 arc.min.
  • Lost motion less than 1 arc.min. Internal main bearing
  • Major motor coupling Parts included
  • Sealed grease

Application

Spec Information

Model
RA-20EA
RA-20EA
RA-20EA
RA-20EA
RA-20EA
RA-40EA
RA-40EA
RA-40EA
RA-40EA
RA-80EA
RA-80EA
RA-80EA
RA-80EA
RA-160EA
RA-160EA
RA-160EA
RA-160EA
RA-160EA
Discrimination1

 Series

 Unit Type

 Series Symbol

 Model

 Motor Series

 w number

(w)

 w number

(kw)

 Type

 Ratio

 Actual Ratio

 motor mounting direction

 Rated Torque

（N・m）

 Allowable Scceleration/Deceleration Torque

（N・m）

 Momentary Maximum Allowable Torque

（N・m）

 Dimension α1

(mm)

 Dimension α1

(mm)

 Dimension Din

(mm)

 Input Shaft Rated Moment

（N・m）

 Input Shaft Allowable Moment

（N・m）

 Dimensionβ

(mm)

 Rated Output Speed

（r.p.m.）

 Rated life

（hr）

 Allowable Output Speed

（r.p.m.）

 Allowable Input Speed

（r.p.m.）

 Backlash

(arc.min.)

 Lost Motion

(arc.min.)

 Torsional Regidity

(Nm/arc.min.)

 Moment Rejidity

(Nm/arc.min.)

 Start-up Effciency

(%)

 Moment of Inertia

(kg・m^2)

 Mass

(kg)

 Allowable Moment 1

(N・m)

 Allowance Thrust 1

(N)

 Allowable Moment 2

(N・m)

 Allowance Thrust 2

(N)

 Output Rotational Speed 1

(min-1)

 Output Torque 1

(N・m)

 Output Rotational Speed 2

(min-1)

 Output Torque 2

(N・m)

 Brake Holding Torque

(N・m)

 Reduced Value Of The Inertia Moment For The Input Shaft

(kgm2)

 Capacity

 Part Number

 Quantity

 Packaging Type

 Capacity

 Part Number

 Quantity

 Packaging Type

 Maximum allowable load (reference values)

(kg)

 Maximum center of gravity height

(mm)

 Maximum tilt angle

(deg)

 Reduction ratio (Rotary axis)

 Reduction ratio (Tilt axis)

 Allowable startup/stop torque (Rotary axis)

(Nm)

 Allowable startup/stop torque (Tilt axis)

(Nm)

 Rotary axis allowable output speed (Operation Example)

（r.p.m.）

 Tilt axis allowable output speed (Operation Example)

（r.p.m.）

 Backlash・Lost motion (Rotary axis)

(arc.min.)

 Backlash・Lost motion (Tilt axis)

(arc.min.)

 Moment of inertia I (I=GD2/4) motor input conversion (Rotary axis)

(kg-m2)

 Moment of inertia I (I=GD2/4) motor input conversion (Tilt axis)

(kg-m2)

 Motor capacity (reference values) ※1

(w)

 Wheel diameter

(mm)

 Maximum speed ※1

(m/min)

 Loading capacity/wheel

(kgf)

 Loading load/4 wheels AGV (reference values) ※1

(kgf)

0.375 80 80 167 412 15 6,000 less than 1 less than 1 49 372 0.00000607 10 882

0.375 104 104 167 412 15 6,000 less than 1 less than 1 49 372 0.00000432 10 882

0.375 120 120 167 412 15 6,000 less than 1 less than 1 49 372 0.00000356 10 882

0.375 140 140 167 412 15 6,000 less than 1 less than 1 49 372 0.00000288 10 882

0.375 160 160 167 412 15 6,000 less than 1 less than 1 49 372 0.00000239 10 882

0.924 80 80 412 1,029 15 6,000 less than 1 less than 1 108 931 0.000022 18.5 1,666

0.924 104 104 412 1,029 15 6,000 less than 1 less than 1 108 931 0.0000163 18.5 1,666

0.924 120 120 412 1,029 15 6,000 less than 1 less than 1 108 931 0.0000137 18.5 1,666

0.924 152 152 412 1,029 15 6,000 less than 1 less than 1 108 931 0.0000101 18.5 1,666

1.758 80 80 784 1,960 15 6,000 less than 1 less than 1 196 1,176 0.00006 28 2,156

1.758 100 100 784 1,960 15 6,000 less than 1 less than 1 196 1,176 0.0000482 28 2,156

1.758 120 120 784 1,960 15 6,000 less than 1 less than 1 196 1,176 0.0000396 28 2,156

1.758 152 152 784 1,960 15 6,000 less than 1 less than 1 196 1,176 0.0000298 28 2,156

3.517 80 80 1,568 3,920 15 6,000 less than 1 less than 1 392 2,940 0.000177 58 3,920

3.517 100 100 1,568 3,920 15 6,000 less than 1 less than 1 392 2,940 0.00014 58 3,920

3.517 128 128 1,568 3,920 15 6,000 less than 1 less than 1 392 2,940 0.000106 58 3,920

3.517 144 144 1,568 3,920 15 6,000 less than 1 less than 1 392 2,940 0.000087 58 3,920

3.517 170 170 1,568 3,920 15 6,000 less than 1 less than 1 392 2,940 0.000074 58 3,920
※1 Subject to change depending on the operating conditions

Download

RA-A
Series

Product Catalog

Instruction Manual

Product CAD Drawing 3D
Selection Table of Model Code

Inquiry

Gearhead

Gearhead is a sealed and prelubricated precision gearbox, complete with accomodations for motor mounting ( major motor manufacturers). Three input types are available.

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    Introduction

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