Hilti DD 150?U Operating Instructions Manual page 11

Use of the vacuum fastening method for overhead drilling is prohibited.
An additional means of securing the drill stand must be employed when the machine is secured with the vacuum base
plate (accessory) for horizontal drilling.
Do not strike the base plate with a hammer or other heavy object when making adjustments to it.
Tampering with or modification of the machine, drill stand and accessories is strictly prohibited.
en
WARNING
The machine may be operated only when connected to an adequately-rated electric supply equipped with an
earth (ground) conductor.
WARNING
Drilling into materials hazardous to the health (e.g. asbestos) is not permissible.
DANGER
Use only the genuine Hilti accessories or ancillary equipment listed in the operating instructions. Use of
accessories or ancillary equipment not listed in the operating instructions may present a risk of personal injury.
2.2 Use of the machine with various items of equipment
With / without the drill stand
Hand-guided / dry
Hand-guided / wet
Hand-guided / wet
On drill stand / wet
On drill stand / wet
2.3 Gears and corresponding core bit diameters
On drill stand, wet
Gear
1
2
3
Hand-guided, wet
Gear
1
2
3
Hand-guided, dry, HDM
Gear
1
2
3
4
With / without the
system
With dust removal sys-
tem
Without water collec-
tion system
With water collection
system
Without water collec-
tion system
With water collection
system
Core bit diameters
(mm)
102...162
28...87
12...25
Core bit diameters
(mm)
121...131
41...111
8...36
Core bit diameters
(mm)
122...162
67...112
37...62
Core bit diameter
37...162 mm
(1½"...6¼")
8...132 mm (½"...5")
8...62 mm (½"...2½")
12...162 mm (½...6¼")
12...162 mm (½...6¼")
Core bit diameters
(inches)
4...6¹⁄₄
1¹⁄₈...3¹⁄₂
¹⁄₂...1
Core bit diameters
(inches)
4³⁄₄...5
1⁵⁄₈...4³⁄₈
¹⁄₂...1¹⁄₂
Core bit diameters
(inches)
4³⁄₄...6¹⁄₄
2⁵⁄₈...4¹⁄₄
1¹⁄₂...2¹⁄₂
Drilling direction
All directions
Not upwards
All directions
Not upwards
All directions
Speed under no load
/min
780
1,520
2,850
Speed under no load
/min
780
1,520
2,850
Speed under no load
/min
780
1,520
2,850