Royal Key-Operated Expanding Mandrel Actuator

Albrecht Precision Arbor — Straight Shank

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.

  • Royal’s Manually-Operated Expanding Mandrel Actuator 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.
  • These models utilize the same precision mandrels, expanding sleeves and locators as our CNC Expanding Mandrels (sold separately).
  • Side-actuated with an included square-drive key means that this unit can accommodate parts with blind bores as well as those with thru-holes.
  • 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/medium-volume production. For high-production environments, Royal’s line of CNC Expanding Mandrels is recommended.
  • When ordering, be sure to also order the appropriate threaded expanding rod adapter(s) sold separately.

Dimensions

MANDREL
MODEL
C D E
A 1.57 0.57 0.87
B 1.81 0.59 1.06
C 2.05 0.61 1.26
D 2.32 0.60 1.50
E 2.52 0.58 1.69
Manually-Operated Expanding Mandrel Actuator Sizing Schematic

Royal Key-Operated Expanding Mandrel Actuator

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Description
PART
NUMBER
PRICE
Royal Key-Operated Expanding Mandrel Actuator
47300
$3,695
Expanding Rod Adapter – Fits Model A Mandrels
47310
$255
Expanding Rod Adapter – Fits Model B Mandrels
47315
$255
Expanding Rod Adapter – Fits Model C Mandrels
47320
$255
Expanding Rod Adapter – Fits Model D Mandrels
47325
$255
Expanding Rod Adapter – Fits Model E Mandrels
47330
$255

1. Choose the appropriate mandrel.

  • Mandrel models are defined by their gripping range.
  • Expanding rod, expanding rod adapter, and mounting hardware included with each mandrel.
  • Order expanding 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
$1,262
B
0.620 –0.901
1.81
0.59
1.06
47101
$1,262
C
0.870 –1.151
2.05
0.61
1.26
47102
$1,262
D
1.120 –1.651
2.32
0.60
1.50
47103
$1,262
E
1.620 –3.276
2.52
0.58
1.69
47104
$1,262

2. Choose part locator.

  • Part locators are an optional accessory.
  • Locator bolts to the front of the mandrel and provides a square surface for the workpiece to locate against.
  • Wider locators available to accommodate short parts.

Royal Part Locators

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Fits
Mandrel
Model
Width
Outer
Diameter
Part
Number
PRICE
A
0.47
1.57
$246
B
0.47
1.57
$246
C
0.47
2.95
$284
D
0.47
2.95
$284
E
0.47
2.95
$284

3. Choose appropriate 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.

Royal Expanding Sleeves - Model A

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Nominal Sleeve
Diameter
Gripping
Range
Part
Number
PRICE
31⁄64″
0.479 - 0.499
$344
1⁄2″
0.495 - 0.515
$344
33⁄64″
0.511 - 0.531
$344
17⁄32″
0.526 - 0.546
$344
35⁄64″
0.542 - 0.562
$344
9⁄16″
0.558 - 0.578
$344
39⁄64″
0.604 - 0.624
$344
19⁄32″
0.589 - 0.609
$344
41⁄64″
0.636 - 0.656
$344
5⁄8″
0.620 - 0.640
$344

Royal Expanding Sleeves - Model B

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Nominal Sleeve
Diameter
Gripping
Range
Part
Number
PRICE
5⁄8″
0.620 - 0.651
$380
21⁄32″
0.651 - 0.682
$380
11⁄16″
0.683 - 0.714
$380
23⁄32″
0.714 - 0.745
$380
3⁄4″
0.745 - 0.776
$380
25⁄32″
0.776 - 0.807
$380
13⁄16″
0.808 - 0.839
$380
27⁄32″
0.830 - 0.870
$380
7⁄8″
0.870 - 0.901
$380

Royal Expanding Sleeves - Model C

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Nominal Sleeve
Diameter
Gripping
Range
Part
Number
PRICE
7⁄8″
0.870 - 0.901
$380
29⁄32″
0.901 - 0.932
$380
15⁄16″
0.933 - 0.964
$380
31⁄32″
0.964 - 0.995
$380
1″
0.995 - 1.026
$380
1 1⁄32″
1.026 - 1.057
$380
1 1⁄16″
1.058 - 1.089
$380
1 3⁄32″
1.089 - 1.120
$380
1 1⁄8″
1.120 - 1.151
$380

Royal Expanding Sleeves - Model D

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Nominal Sleeve
Diameter
Gripping
Range
Part
Number
PRICE
1 1⁄8″
1.120 - 1.151
$409
1 5⁄32″
1.151 - 1.182
$409
1 3⁄16″
1.183 - 1.214
$409
1 7⁄32″
1.214 - 1.245
$409
1 1⁄4″
1.145 - 1.276
$409
1 9⁄32″
1.276 - 1.317
$409
1 5⁄16″
1.308 - 1.339
$409
1 11⁄32″
1.339 - 1.370
$409
1 3⁄8″
1.370 - 1.401
$409
1 13⁄32″
1.401 - 1.432
$409
1 7⁄16″
1.433 - 1.464
$409
1 15⁄32″
1.464 - 1.495
$409
1 1⁄2″
1.495 - 1.526
$409
1 17⁄32″
1.526 - 1.557
$409
1 9⁄16″
1.558 - 1.589
$409
1 19⁄32″
1.589 - 1.620
$409
1 5⁄8″
1.620 - 1.651
$409

Royal Expanding Sleeves - Model E

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Nominal Sleeve
Diameter
Gripping
Range
Part
Number
PRICE
1 5⁄8″
1.620 - 1.651
$497
1 21⁄32″
1.651 - 1.682
$497
1 11⁄16″
1.683 - 1.714
$497
1 23⁄32″
1.714 - 1.745
$497
1 3⁄4″
1.745 - 1.776
$497
1 25⁄32″
1.776 - 1.807
$497
1 13⁄16″
1.808 - 1.839
$497
1 27⁄32″
1.839 - 1.870
$497
1 7⁄8″
1.870 - 1.901
$497
1 29⁄32″
1.901 - 1.932
$497
1 15⁄16″
1.933 - 1.964
$497
1 31⁄32″
1.964 - 1.995
$497
2″
1.995 - 2.026
$497
2 1⁄32″
2.026 - 2.057
$497
2 1⁄16″
2.058 - 2.089
$497
2 3⁄32″
2.089 - 2.120
$497
2 1⁄8″
2.120 - 2.151
$497
2 5⁄32″
2.151 - 2.182
$497
2 3⁄16″
2.183 - 2.214
$497
2 7⁄32″
2.214 - 2.245
$497
2 1⁄4″
2.245 - 2.276
$497
2 9⁄32″
2.276 - 2.307
$497
2 5⁄16″
2.308 - 2.339
$497
2 11⁄32″
2.339 - 2.370
$497
2 3⁄8″
2.370 - 2.401
$497
2 13⁄32″
2.401 - 2.432
$497
2 7⁄16″
2.433 - 2.464
$497
2 15⁄32″
2.464 - 2.495
$497
2 1⁄2″
2.495 - 2.526
$497
2 17⁄32″
2.526 - 2.557
$564
2 9⁄16″
2.558 - 2.589
$564
2 19⁄32″
2.589 - 2.620
$564
2 5⁄8″
2.620 - 2.651
$564
2 21⁄32″
2.651 - 2.682
$564
2 11⁄16″
2.683 - 2.714
$564
2 23⁄32″
2.714 - 2.745
$564
2 3⁄4″
2.745 - 2.776
$564
2 25⁄32″
2.776 - 2.807
$564
2 13⁄16″
2.808 - 2.839
$564
2 27⁄32″
2.839 - 2.870
$564
2 7⁄8″
2.870 - 2.901
$564
2 29⁄32″
2.901 - 2.932
$564
2 15⁄16″
2.933 - 2.964
$564
2 31⁄32″
2.964 - 2.995
$564
3″
2.995 - 3.026
$564
3 1⁄32″
3.026 - 3.057
$564
3 1⁄16″
3.058 - 3.089
$564
3 3⁄32″
3.089 - 3.120
$564
3 1⁄8″
3.120 - 3.151
$564
3 5⁄32″
3.151 - 3.182
$564
3 3⁄16″
3.183 - 3.214
$564
3 7⁄32″
3.214 - 3.245
$564
3 1⁄4″
3.245 - 3.276
$564