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The DD-750 HY is a universal, high-performance core drilling system with a 4-speed gearbox. It is
suitable for drilling holes within the range 52 mm – 750 mm dia. It can be powered either by the
D-LP 15 hydraulic unit (fixed oil flow rate) or by the D-LP 32 (with variable oil flow rate). The modular
concept permits angular drilling and the use of different baseplates employing different fastening
methods. The DD-750 HY can be operated with manual control of drilling feed pressure or with a
hydraulic feed unit. The D-R . . L rails used by the drilling system can also be used with Hilti wallsaw
systems. Diamond core bits incorporating the Hilti DD-BU quick-change interface or with UNC
1
/
4
ʺ
threaded connection ends can be fitted.
DD-750 HY technical data
Drilling dia. range:
52–750 mm
Power output:
max. 11 KW
Oil flow rate:
max. 60 l / min.
Operating pressure:
max. 170 bar
Motor capacity:
20 ccm
Torque:
max. 710 Nm
Max. permissible water supply pressure:
6 bar
Gearing:
4-speed
Chuck:
DD-C-BU / DD-C-BS
Dimensions of drilling motor (L x W x H):
355 x 215 x 520 mm
Weight (drilling motor):
30 kg
Weight (drilling rig DD-BA 3-70, D-R100-L):
43 kg
Noise and vibration information:
Typical A-weighted sound power
level in accordance with ISO 3744:
104 dB(A)
Typical A-weighted emission sound pressure
level at the operator's ear using remote control
(4 m distance) in accordance with EN 11201:
80 dB (A)
Typical A-weighted emission sound pressure
level at the operator's ear using manual control
(4 m distance) in accordance with EN 11201:
94 dB (A)
Wear ear protection!
Uncertainty for the given sound level is:
3 dB
Total triaxial vibration value at the spider wheel during manual advance, as per ISO 5349
(
vibration vector sum)
Drilling in concrete (wet) a
h, DD
:
1.5 m/s
2
Uncertainty K:
1.5 m/s
2
NOTE
The vibration emission level given in this information sheet has been measured in accordance
with a standardised test given in EN ISO 5349 and may be used to compare one tool with ano-
ther. It may be used for a preliminary assessment of exposure. The declared vibration emission
level represents the main applications of the tool. However if the tool is used for different appli-
cations, with different accessories or poorly maintained, the vibration emission may differ. This
may significantly increase the exposure level over the total working period. An estimation of the
General description and technical data for the DD-750 HY
Printed: 22.10.2015 | Doc-Nr: PUB / 5128296 / 000 / 02
