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Radial Drilling Machines

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Product Range

Models: AJRD 38-100H

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

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 AJRD 100H
Drilling capacity
Cast Iron (mm)
42 60 60 70 100 150
Drilling capacity
Mild steel (mm)
38 50 50 65 80 100
Threading fine pitch in
steel or cast iron (mm)
25-20 30-25 55-45 50-60 50-60 50-60
Max distance from
spindle to column (mm)
815 1150 1250 or 1600 1600 or 2000 2500 3150
Travel of Headstock (mm) 630 815 900 or 1250 1140 or 1510 1750 2580
Max distance from
spindle to base (mm)
1110 1220 1220 1500 or 1900 2000 2500
Spindle speeds 88-1500 Rpm(6) 44-1500 Rpm (12) 25-2000 Rpm (16) 40-1920 Rpm (12) 16-1250 Rpm (16) 8-1000 Rpm (22)
Spindle feeds (mm/rev) 0.05-0.15 0.05-0.15 0.04-3.2 0.07-0.96 0.04-3.2 0.06-3.2
Spindle taper
(MT)
4 4 5 5 6 6
Spindle travel (mm) 200 250 315 370 450 500
Main spindle motor 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) 15 Hp (11 Kw)
Floor space (mm) 1580 x 820 1970 x 1010 2230 or 2600 x 1220 2850 or 3100 x 1400 4000 x 1600 4780 x 1630
Net weight (kg) 1175 2000 3000 or 3500 4600 or 5600 11000 20000
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