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Articles marked ◊ are not held in stock, procurement is effected at short notice.
3
Clamping
Systems
Design:
With cylindrical shank according to
DIN 1835 B+E.
Supplied:
Drilling chuck with clamping nut ST-GB.
Note:
Tightening occurs by means of roller spanner
(Order No. 3657 on
Ç
3/68).
Suitable collets found on on
Ç
3/92.
Order
No.
for
taps
1871
Mounting shank dia.
mm
Outer dia. D
mm
Projection length A
mm
Collet
1100
M3 - M12
262.00
25
30
58
GER16
1110
M3 - M20
270.00
25
40
65
GER25
1120
M4 - M27
315.00
25
50
87
GER32
1130
M4 - M33
315.00
32
63
109
GER40
(181)
Drilling chuck with minimum length compensation SYNCHRO T
DIN
1835
B+E
Form
AD
Design:
With taper shank according to
DIN 69871, form AD/B.
Balancing quality: G6.3 12000 min
-1
.
Supplied:
Drilling chuck with clamping nut ST-GB.
Note:
Tightening occurs by means of roller spanner
(Order No. 3657 on
Ç
3/68).
Suitable collets found on
Ç
3/92.
Order
No.
for
taps
1871
SK
Outer dia. D
mm
Projection length A
mm
Collet
1140
M3 - M12
404.00
40
30
79
GER16
1150
M3 - M20
414.00
40
40
84
GER25
1160
M4 - M27
414.00
40
50
95
GER32
1170
M4 - M33
414.00
40
63
105
GER40
(181)
Drilling chuck with minimum length compensation SYNCHRO T
DIN
69871
Form
AD/B
Drilling chuck with minimum length compensation SYNCHRO T
The feed axis is synchronised with spindle rotary movement on
CNC machining centres. This allows cutting threads without length
compensation (“rigid drilling”) with these synchronised spindles.
Practice, however, has shown that there are synchronisation faults.
High axial forces reducing the service life by high flange friction
develop as a result when rigid drilling chucks are being used leading
to threads which are not true to gauge size or result in inaccurate
threads. This problem is eliminated using drilling chucks with
minimum length compensation.
SYNCHRO T drilling chucks technical features:
• minimum length compensation on tension/compression (±0.5 mm)
• High radial rigidity due to double bearing
• High concentricity
• High clamping force due to clamping using collet chuck taps
with female square
• Separate compression/tension mechanism
• Defined, adjustable compression/tension forces
• Compact, wear-free design
• Long life
• Internal coolant supply
• No clamping nuts with sealing discs necessary when using coolants,
because the FAHRION drilling collets GERC-GBD are generally
delivered with sealing plugs (usable up to 120 bar)
• Minimum quantity lubrication (MQL) possible upon request
Design:
With taper shank according to
JISB 6339
(MAS-BT), form AD/B.
Balancing quality: G6.3 12000 min
-1
.
Supplied:
Drilling chuck with clamping nut ST-GB.
Note:
Tightening occurs by means of roller spanner
(Order No. 3657 on
Ç
3/68).
Suitable collets found on
Ç
3/92.
Order
No.
for
taps
1871
BT
Outer dia. D
mm
Projection length A
mm
Collet
1180
M3 - M12
404.00
40
30
84
GER16
1190
M3 - M20
414.00
40
40
89
GER25
1200
M4 - M27
414.00
40
50
110
GER32
1210
M4 - M33
414.00
40
63
115
GER40
(181)
Drilling chuck with minimum length compensation SYNCHRO T
B
JIS
6339
MAS/BT
Form
AD/B
Drilling chuck and accessories
645