Ajax Machine Tools Ltd.
Ajax Machine Tools Ltd. Unit 360 Ampress Lane, Ampress Park, Lymington. Hampshire. SO41 8JX
Tel. +44 (0)1590 676000 - Fax. +44 (0)1590 676001 - Spares. +44 (0)870 8702550

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Surface Grinders

There are six models of Ajax Surface Grinding Machines with working areas up to 1524x508mm.

All machines are traditional in design with easy access for complete, accurate and efficient control. All models are suitable for toolroom and production work. The longitudinal table movement is hydraulically driven and the cross traverse and wheel head feeds are electrically driven, all with infinitely variable speed control.

All models are available with manual downfeed of the wheel head and/or automatic downfeed which can be incrementally pre-set. Machines with the 'H' suffix indicate automatic longitudinal and cross feed as standard. Suffix 'HD' indicates that machines are also equipped with automatic downfeed.

The Wheel Head:
The wheel head spindle on all models is mounted on super precision bearings, completely sealed and maintenance free. The casting is constructed for extreme rigidity of the spindle and bearing assemblies. The grinding spindle is directly coupled to a dynamically balanced, flange-mounted motor through a shock absorbing coupling. The wheel head of all HD models is provided with rapid power positioning with fine positioning carried out by means of a 0.0025mm incremented handwheel.

Table:
The longitudinal movement of the table is provided hydraulically and the rate of traverse is infinitely variable between the ranges shown below.

Lubrication of all slideways is by means of an electronically controlled pump unit through metering valves to the various lubrication ports. Hand traverse of the work table is by means of a hand wheel rack and pinion. The table is provided with ample operator splash protection.

Surface Grinders
TABLE
AJ-500 H/HD
AJ-600 H/HD AJ-750 H/HD
AJ-800 HD
AJ-1000 HD
AJ-1500 HD
Working surface (mm)
483x228
584x254
737x254
800x400
1016x508
1524x508
Maximum Longitudinal Traverse (mm)
520
622
775
840
1116
1624
Longitudinal speed (m/min)
6.7-24.4
6.7-24.4
6.7-24.4
4.9-24.4
5-25
5-25
Maximum grinding length & width (MM)
508X254
610X305
762X305
813X406
1016X508
1524X508
Maximum table loading (kg)
1000
1200
GRINDING HEAD
Grinding wheel size (mm)
200x13x32
355x32x127
355x32x127
335x50x127
406x50x127
406x50x127
Spindle speed (rpm)
2900
1450
1450
1450
1450
1450
Maximum height of spindle centre (mm)
480
590
590
635
600
600
Vertical positioning
Hand (H) Power (HD)
Hand (H) Power (HD)
Hand (H) Power (HD)
Power
Power
Power
Vertical downfeed (HD model only)
Auto
Auto
Auto
Auto
Auto
Auto
Vertical traverse handwheel graduation (mm)
0.0025
0.002
0.002
0.002
0.002
0.005
Cross feed handwheel graduation (mm)
0.02
0.02
0.02
0.02
0.02
0.02
Cross feed travel (mm)
0-267
0-330
0-343
0-406
0-558
0-558
Automatic cross traverse (mm)
0-17.5
0.16
0.16
0.25
HYDRAULIC SYSTEM
Working pressure (kg/cm2)
18-22
18-22
18-22
18-22
18-22
18-22
Tank capacity (l)
60
60
60
80
80
80
MOTORS
Grinding spindle power
2Hp (1.5kW)
5Hp (3.7kW)
5Hp (3.7kW)
7.5Hp (5.6kW)
10Hp (7.5kW)
10Hp (7.5kW)
Cross feed
0.2Hp (0.15kW)
0.2Hp (0.15kW)
0.2Hp (0.15kW)
0.25Hp (0.18kW)
0.25Hp (0.18kW)
0.25Hp (0.18kW)
Vetical positioning / downfeed
0.25Hp (0.18kW)
0.25Hp (0.18kW)
0.25Hp (0.18kW)
0.25Hp (0.18kW)
0.25Hp (0.18kW)
0.25Hp (0.18kW)
Hydraulic pump
2Hp (1.5kW)
2Hp (1.5kW)
2Hp (1.5kW)
3Hp (2.2kW)
5Hp (3.7kW)
5Hp (3.7kW)
Coolant pump
0.25Hp (0.18kW)
0.25Hp (0.18kW)
0.25Hp (0.18kW)
0.25Hp (0.18kW)
0.25Hp (0.18kW)
0.25Hp (0.18kW)
Coolant flow rate (l/min)
40
40
40
40
40
40
WEIGHT AND DIMENSIONS
Net weight of machine (kg)
1300
1900
1950
2800
4500
5000
Gross weight (kg)
1550
2200
2300
3300
5200
5800
Dimensions (mm)
1524x914x1740
1850x1076x1880
2149x1076x1880
2502x1422x2000
3760x2235x2235
4648x2235x2235
Shipping case dimensions (mm)
1680x1630x2010
2010x1700x2160
2290x1730x2160
2670x2160x2290