Owner manual

Series 646 Hydraulic Collet Grips
20
Specifications
Introduction
Series 646 Hydraulic Collet Grips Force and Torque Capacities
The amount of torque the grips can produce is reduced with biaxial operation.
The amount of torque is affected by the amount of axial force and the size of the
specimen. The following graphs illustrate the axial-torsional performance
envelope of the Model 646.10 and Model 646.25 Hydraulic Collet Grips.
Model 646.10 Maximum Torque versus Axial Load
Series 646 Collet Grip Specifications
M
ODEL
AXIAL CAPACITY
*
* Ratings are at 45 MPa (6500 psi).
TORSIONAL CAPACITY
*
WEIGHT
646.10 Axial 100 kN (22 kip) – 18 kg (40 lb)
646.25 Axial 250 kN (55 kip) – 72 kg (160 lb)
646.10 Axial/Torsional 100 kN (22 kip)
1100 N
·m (10,000 lbf·in)
18 kg (40 lb)
646.25 Axial/Torsional 250 kN (55 kip)
2200 N
·m (20,000 lbf·in)
72 kg (160 lb)
Torque (in-lbs)
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
6 mm dia
.25" dia
.375 " dia
.5" dia
15 mm dia
.75" dia
20 mm dia
1" dia
30 mm dia
4000 6000 2000 8000
10000
12000 14000 16000
18000
20000
22000
Force (lbs)
Specimen
Diameter