ROYAL KEY-OPERATED I.D. WORKHOLDING

For Turning, Milling, and Grinding Applications
Power-Block™ I.D. Workholding
  • Royal’s Key-Operated I.D. Workholding System incorporates a precision- ground 1-1/2″ diameter straight shank that enables the unit to be held in any collet or jaw chuck, reducing setup times by eliminating the need to change out the machine’s workholding device.
  • For use with all Royal precision mandrels, stops, and sleeves. These items are sold separately.
  • Side-actuated with an included square-drive key means that this unit can accommodate parts with blind bores.
  • Precision-ground square and concentric within 0.0005″. If higher accuracy is needed the mandrel can be clocked-in once the unit is gripped in a chuck.
  • Universal straight shank mount enables this ID workholding system to be easily moved from machine to machine as jobs require.
  • A great option for low-volume ID gripping.
  • When ordering, be sure to also order the appropriate threaded expanding rod adapters sold separately.
Royal’s manually-operated mandrel actuator has a 1.5″ diameter straight shank, enabling to be quickly and easily moved from machine to machine as jobs require. In this application the unit is gripped in a Royal QG-80 CNC collet chuck.
Expanding Mandrel Application

How to Order:

  1. Choose the appropriate body assembly based upon your application.
  2. Choose the appropriate mandrel (models A-E) based upon the diameter you need to All mandrels and bodies share a common mounting interface for full interchangeability.
  3. If required, choose the appropriate part locator to provide a ground banking surface for the workpiece.
  4. Choose the appropriate expanding sleeve based upon the mandrel and diameter you need to grip.

Step 1 – Choose Body Assembly

KEY-OPERATED BODY – Universal

  • This unit has a precision-ground shaft that can be held in any jaw chuck or 1.5” dia. collet, eliminating the need to change out the workholding and enabling the system to be moved from machine to machine as jobs require.
  • Order mandrels, expanding rod adapters, locators, and sleeves separately.

Royal Key-Operated I.D. Body Assemblies

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Description
PART
NUMBER
PRICE
Key-Operated I.D. Body Assembly
47300
$4,140
Expanding Rod Adapter – Fits Model A Mandrels
47310
$293
Expanding Rod Adapter – Fits Model B&C Mandrels
47315
$293
Expanding Rod Adapter – Fits Model D Mandrels
47325
$293
Expanding Rod Adapter – Fits Model E Mandrels
47330
$293

Step 2 - Choose Mandrel

  • Choose appropriate mandrel model according to gripping range.
  • All Royal mandrels have a common precision ground interface for complete compatibility with all Royal I.D. body assemblies.
  • Order body assembly, locators, and sleeves separately.

Royal Mandrels

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Mandrel
Model
Gripping
Range
C
D
E
PART NUMBER
PRICE
A
0.479–0.640
1.57
0.57
0.87
47100
$1,420
B
0.620 –0.901
1.81
0.59
1.06
47101
$1,420
C
0.870 –1.151
2.05
0.61
1.26
47102
$1,420
D
1.120 –1.651
2.32
0.60
1.50
47103
$1,420
E
1.620 –3.276
2.52
0.58
1.69
47104
$1,420

Step 3 - Choose Part Locator

  • Optional part locator bolts to the front of the mandrel and provides a precision banking surface for the workpiece to locate against.
  • Order body assembly, mandrels, and sleeves separately.

Royal Part Locators

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Fits
Mandrel
Model
Width
Outer
Diameter
Part
Number
PRICE
A
0.47
1.57
$283
B
0.47
1.57
$283
C
0.47
2.95
$327
D
0.47
2.95
$327
E
0.47
2.95
$327

Step 4 - Choose Expanding Sleeve

  • Order expanding sleeves according to mandrel models A thru E.
  • All expanding sleeves are fully sealed against coolant and chip penetration.
  • Parallel grip ensures full-length part contact for optimum accuracy and grip force.
  • All sleeves collapse 0.005" below nominal ground size to ensure easy part loading and unloading.
  • Order body assembly, mandrels, and locators separately

Royal Expanding Sleeves - Model A

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Nominal Sleeve
Diameter
Gripping
Range
Part
Number
PRICE
31⁄64″
0.479 - 0.499
$395
1⁄2″
0.495 - 0.515
$395
33⁄64″
0.511 - 0.531
$395
17⁄32″
0.526 - 0.546
$395
35⁄64″
0.542 - 0.562
$395
9⁄16″
0.558 - 0.578
$395
39⁄64″
0.604 - 0.624
$395
19⁄32″
0.589 - 0.609
$395
41⁄64″
0.636 - 0.656
$395
5⁄8″
0.620 - 0.640
$395

Royal Expanding Sleeves - Model B

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Nominal Sleeve
Diameter
Gripping
Range
Part
Number
PRICE
5⁄8″
0.620 - 0.651
$437
21⁄32″
0.651 - 0.682
$437
11⁄16″
0.683 - 0.714
$437
23⁄32″
0.714 - 0.745
$437
3⁄4″
0.745 - 0.776
$437
25⁄32″
0.776 - 0.807
$437
13⁄16″
0.808 - 0.839
$437
27⁄32″
0.830 - 0.870
$437
7⁄8″
0.870 - 0.901
$437

Royal Expanding Sleeves - Model C

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Nominal Sleeve
Diameter
Gripping
Range
Part
Number
PRICE
7⁄8″
0.870 - 0.901
$437
29⁄32″
0.901 - 0.932
$437
15⁄16″
0.933 - 0.964
$437
31⁄32″
0.964 - 0.995
$437
1″
0.995 - 1.026
$437
1 1⁄32″
1.026 - 1.057
$437
1 1⁄16″
1.058 - 1.089
$437
1 3⁄32″
1.089 - 1.120
$437
1 1⁄8″
1.120 - 1.151
$437

Royal Expanding Sleeves - Model D

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Nominal Sleeve
Diameter
Gripping
Range
Part
Number
PRICE
1 1⁄8″
1.120 - 1.151
$470
1 5⁄32″
1.151 - 1.182
$470
1 3⁄16″
1.183 - 1.214
$470
1 7⁄32″
1.214 - 1.245
$470
1 1⁄4″
1.145 - 1.276
$470
1 9⁄32″
1.276 - 1.317
$470
1 5⁄16″
1.308 - 1.339
$470
1 11⁄32″
1.339 - 1.370
$470
1 3⁄8″
1.370 - 1.401
$470
1 13⁄32″
1.401 - 1.432
$470
1 7⁄16″
1.433 - 1.464
$470
1 15⁄32″
1.464 - 1.495
$470
1 1⁄2″
1.495 - 1.526
$470
1 17⁄32″
1.526 - 1.557
$470
1 9⁄16″
1.558 - 1.589
$470
1 19⁄32″
1.589 - 1.620
$470
1 5⁄8″
1.620 - 1.651
$470

Royal Expanding Sleeves - Model E

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Nominal Sleeve
Diameter
Gripping
Range
Part
Number
PRICE
1 5⁄8″
1.620 - 1.651
$572
1 21⁄32″
1.651 - 1.682
$572
1 11⁄16″
1.683 - 1.714
$572
1 23⁄32″
1.714 - 1.745
$572
1 3⁄4″
1.745 - 1.776
$572
1 25⁄32″
1.776 - 1.807
$572
1 13⁄16″
1.808 - 1.839
$572
1 27⁄32″
1.839 - 1.870
$572
1 7⁄8″
1.870 - 1.901
$572
1 29⁄32″
1.901 - 1.932
$572
1 15⁄16″
1.933 - 1.964
$572
1 31⁄32″
1.964 - 1.995
$572
2″
1.995 - 2.026
$572
2 1⁄32″
2.026 - 2.057
$572
2 1⁄16″
2.058 - 2.089
$572
2 3⁄32″
2.089 - 2.120
$572
2 1⁄8″
2.120 - 2.151
$572
2 5⁄32″
2.151 - 2.182
$572
2 3⁄16″
2.183 - 2.214
$572
2 7⁄32″
2.214 - 2.245
$572
2 1⁄4″
2.245 - 2.276
$572
2 9⁄32″
2.276 - 2.307
$572
2 5⁄16″
2.308 - 2.339
$572
2 11⁄32″
2.339 - 2.370
$572
2 3⁄8″
2.370 - 2.401
$572
2 13⁄32″
2.401 - 2.432
$572
2 7⁄16″
2.433 - 2.464
$572
2 15⁄32″
2.464 - 2.495
$572
2 1⁄2″
2.495 - 2.526
$572
2 17⁄32″
2.526 - 2.557
$649
2 9⁄16″
2.558 - 2.589
$649
2 19⁄32″
2.589 - 2.620
$649
2 5⁄8″
2.620 - 2.651
$649
2 21⁄32″
2.651 - 2.682
$649
2 11⁄16″
2.683 - 2.714
$649
2 23⁄32″
2.714 - 2.745
$649
2 3⁄4″
2.745 - 2.776
$649
2 25⁄32″
2.776 - 2.807
$649
2 13⁄16″
2.808 - 2.839
$649
2 27⁄32″
2.839 - 2.870
$649
2 7⁄8″
2.870 - 2.901
$649
2 29⁄32″
2.901 - 2.932
$649
2 15⁄16″
2.933 - 2.964
$649
2 31⁄32″
2.964 - 2.995
$649
3″
2.995 - 3.026
$649
3 1⁄32″
3.026 - 3.057
$649
3 1⁄16″
3.058 - 3.089
$649
3 3⁄32″
3.089 - 3.120
$649
3 1⁄8″
3.120 - 3.151
$649
3 5⁄32″
3.151 - 3.182
$649
3 3⁄16″
3.183 - 3.214
$649
3 7⁄32″
3.214 - 3.245
$649
3 1⁄4″
3.245 - 3.276
$649