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12
Type
Reference number
Current consumption
Power supply type
No-load speed (Clockwise)
1st gear
2nd gear
3rd gear
No-load speed (Counterclockwise)
1st gear
2nd gear
3rd gear
Weight according to EPTA-Procedure 01/2003
Class of protection
Core drilling capacity in steel - TCT (carbide tipped
cutter)
Core drilling capacity in steel – HSS (high speed
steel)
Drilling capacity in steel – HSS twist drill bit
Bolt hole diameter max.
Max. twist drill diameter with the supplied chuck
Reamer diameter
Counterboring diameter
JCM312U
7 270 38
15 A
1 ~
180 rpm
260 rpm
580 rpm
180 rpm
260 rpm
580 rpm
25.4 kg
55.9 lbs
I
12 – 80 mm
7
1
7
in–3
in
/
/
/
16
8
12 – 65 mm
7
9
7
/
in–2
/
in
/
16
16
16
32 mm
1
in
1
/
4
1
M27, 1
/
in
8
13 mm
1
/
in
2
31 mm
3
1
/
in
16
50 mm
2 in
JCM312auto
7 270 39
15 A
1 ~
180 rpm
260 rpm
580 rpm
180 rpm
260 rpm
580 rpm
26.4 kg
58 lbs
I
12 – 80 mm
1
in–3
in
/
16
8
12 – 65 mm
9
in–2
/
in
16
32 mm
1
in
1
/
4
1
M27, 1
/
in
8
13 mm
1
/
in
2
31 mm
3
1
/
in
16
50 mm
2 in
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