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  2. Flexible standard component system
  3. 03000
  4. Centring clamps, mandrel collets, machinable collets
  5. Mandrel collets
    6. 03157-123442
Designation
Mandrel collet
Main material
structural steel
Surface finish body
black oxidised
Component material
mild steel
Surface finish component
case-hardened
D=Diameter min.
29,3
D=max. diameter
42
Accessories NLM
03157-01-1645
Application
machined
Clamping force max. kN
44,5
Clamping type
internal clamping
D1
69,5 h8
D2
55,9
D3 for screw ISO 10642
M5
D4 Tapered- head bolt
M16
H
39,6
H1
31,8
H2
27
H3
22
S1 (travel)
0,1
SW Tapered- head bolt
14
Tightening torque max. Nm
280
~ CONFLICT MINERALS 3TG status
no intentional 3TG
~ CP65 substance 1 cancer & reproductive toxicity
lead and lead compounds
~ CP65 substance 2 cancer
cobalt metal powder
~ PFAS free?
yes
~ REACH SVHC-free?
no
~ REACh SVHC 1 name > threshold
lead
~ RoHS conformity
yes, with exemption
~ RoHS exemption/s
III/6a-I
~ TSCA 6(H) conformity
yes

Description

Material
Mandrel mild steel.
Taper-head screw low-carbon steel
Version
Mandrel black oxidised.
Taper-head screw case-hardened.
Note
The mandrel collet is particularly suitable for finishing turned parts. By turning or milling, diameter D can be adapted to the diameter of the clamped workpiece.
Low design - no interfering clamp straps.
Tightened using a hex socket wrench or hydraulics.

* D min. = smallest diameter to which ”D” may be turned or milled.
D max. – maximum diameter when unmachined
S – maximum clamping pin travel when actuated, S = 0,1 mm
Assembly
Expand the mandrel approx. 0.1 mm over the relaxed diameter. Turn or mill the mandrel to suit the internal diameter of the workpiece. The base flange can be centred in a pocket or using dowel pins.
Drawing reference
1) taper-head screw
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