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Product Range
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Models: AJRD 38-80H
AJRD 50 Radial Arm Drilling Machine
The main castings of the Ajax AJRD radial arm drilling
machines are high quality cast iron, reinforced by a system
of crossed ribs and boxed sections. All castings are hardened
to 200-220HB. The column for the AJRD 38 & 50 is a vertical rotating
column with manual clamping as standard, hydraulic clamping
being standard on all models above this size.
Control mechanism
This system allows smooth rotation of the column and avoids
angular deflection of the spindle axis when clamping is activated.
A safety device prevents the arm from dropping in the event
of excess wear of the arm raising nut and semi automatic lubrication
system provides lubrication for both column and elevating
screw.
Details
Spindle
The spindle and quill are manufactured from special forged steel
and are constructed to reduce vibration to a minimum. The quill
is machined with utmost accuracy and the teeth cut from the
solid, and is also ground to ensure maintained accuracy for
the feed rate. The spindle is mounted in double row roller and
thrust bearings protected by a grease seal. The spindle is secured
by an anti-vibration lock-nut at the top of the spindle. The
spindle and quill assembly are fitted with a counter-weight
providing uniform smoothness of the entire stroke, the quill
over-travel is obliviated by a special safety device. An arm
raising and lowering special safety device prevents over-travel.
Hydraulic Clamping
Hydraulic clamping on the model 30 & 50 is not available they have manual clamping, but supplied
as standard on the rest. Clamping of the head, column
and arm is actuated by a hydraulic unit operated by push buttons,
the hydraulic system being divided to allow the operator to
move the arm vertically without affecting the spindle alignment
and similarly unlock the head or column independently. |
Headstock
The headstock is a totally enclosed unit including the gearing
for the spindle speeds and feeds.. The feed
mechanism also provides a depth stop mechanism. All gears are
made of nickel chrome steel and are hardened and ground, with
lubrication provided by an automatic lubrication pump.
Electrical System
The electrical control panel is located on the back of the
arm in compliance with the CE norm.
Coolant Equipment
Coolant equipment is supplied as standard and consists of
a motor driven pump complete with piping to the drill point
and return piping to the sump. |
Specifications
| Capacity |
|
AJRD 38 |
AJRD 50 |
AJRD 50H |
AJRD 65H |
AJRD 80H |
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Drilling capacity
Cast Iron (mm) |
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42 |
60 |
60 |
70 |
100 |
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Drilling capacity
Mild steel (mm) |
|
38 |
50 |
50 |
65 |
80 |
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Threading fine pitch in
steel or cast iron (mm) |
|
25 - 20 |
30-25 |
55-45 |
60-50 |
75-65 |
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Maximum distance from
spindle to column (mm) |
|
815 |
1150 |
1250 or 1600 |
1600 or 2000 |
2500 |
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| Horizontal Travel of Headstock (mm) |
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630 |
815 |
900 or 1250 |
1140 or 1510 |
2000 |
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Maximum distance from
spindle to base (mm) |
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1110 |
1220 |
1220 |
1500 or 1900 |
2000 |
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| Feeds and Spindle |
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| Spindle speeds |
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88-1500 Rpm(6) |
44 - 1500 Rpm (12) |
25 - 2000 Rpm (16) |
40 - 1920 Rpm (12) |
16 - 1250 Rpm (16) |
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| Spindle feeds (mm/rev) |
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0.05 - 0.15 |
0.05 - 0.15 |
0.04 - 3.2 |
0.07 - 0.96 |
0.04 - 3.2 |
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| Spindle diameter (mm) |
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Spindle taper
(Morse taper) |
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4 |
4 |
5 |
5 |
6 |
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| Spindle travel (mm) |
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200 |
250 |
315 |
370 |
450 |
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| Motors |
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| Main spindle motor |
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2 Hp (1.5 kW) |
3 Hp (2.2 kW) |
5 Hp (3.7 kW) |
7.5 Hp (5.5kW) |
10 Hp (7.5 Kw) |
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| Weight and Dimensions |
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| Floor space (mm) |
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1580 x 820 |
1970 x 1010 |
2230 or 2600 x 1220 x 2540 |
2850 or 3100 x 1400 x |
4000 x 1600 x 3850 |
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| Net weight (kg) |
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1175 |
2000 |
3000 or 3500 |
4600 or 5600 |
11000 |
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