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Refrigeration Compressors
Refrigeration Compressors
Metro high speed reciprocating
compressors are manufactured with latest technology and most modern method.
These compressors are available in capacities up-to 12 cylinders in V &
W arrangements.
Suitable for industrial applications, Metro Compressors have compact
design, built in suction and discharge manifold with large size suction
filter for protection of vital parts. All welded steel construction of
crankcase unit with provision of unloaded starting system and the safeguard
against incidental liquid hammer. The crank case is fully leak & impact
proof, the smooth internal surfaces of the crank case provides better
condition for lubricants. Every parts is precision made and interchangeable.
These compressors are suitable for V-belt and Direct drive system. Our heavy
duty Compressors can work smoothly for 24 hours continuously for a long span
of time.
Piston / Cylinder Liner:
Pistons are made from special aluminum
alloy. Gudgeon pins are case hardened steel and grounded. Cylinder liners
are made from special close grain alloy casting, precision boring, horning
and pressed into cylinders blocks. These liners can be easily replaced.
Hydraulically operated valve lifting mechanism on each cylinder ensures
absolute capacity control and fully unloading start.
Connecting Rod:
The connecting rod is die forged. It has
steel backed White Metal shells on its big end bronze bearings, While the
smaller end has a wear resistant metal.
Crankshaft & Bearings:
Has exceptionally good running metal
properties and wear resistance. All bearing surfaces are grounded and
dynamically balanced. The main Bearings are white metal lined steel shells,
the intermediate bearings are provided with split type for 4,6,9 & 12
cylinder compressor.
Lubrication :
Forced feed system is provided by
crankshaft driven gear type oil pump that delivers oil to all bearings and
capacity control system.
Shaft Seal Assembly:
The rotary face type, sliding surfaces
are grounded to an extreme finish and lapped. Frictional heat is removed by
the full flow of lubricating oil that is directly fed from oil pump with
provision of water cooled system too.
Standard Accessories :
Every Metro Compressor is dispatched to
the customer with the following standard accessories:
Drive set :
- Consisting of V- belts, Motor Pulley & Flywheel
- Plain base plate with foundation bolts
- Suction & Discharge Service valves (Shut-off valves)
- Pressure gauge, gauge board and mounting stand.
- Ferrules and pipes
- Hour meter
- Indicator- Bulbs & Switches
- Manual Regulator Capacity Control
- Oil Filter Set
- Rubber Seal Sets
- Tools Kit Box
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Optional Items
- Base Frame Unit for compressor & Motor with foundation bolts
- Crank Case heater for 2 stage
- Interstage Cooling system for 2 stage
- Cut-off switches L-P-H-P. & O.P
- Electrically operated capacity control
- Oil Separator
- Equalizer connections for parallel running of Compressor
- Flexible direct coupling with guard
- V-Belt guard for Motor & Compressor
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Technical Data : Refrigeration (NH3) Compressors –Single
Stage
| S. No |
Model |
MC-10 |
MC-20 |
MC-30 |
MC-40 |
MC-60 |
MC-90 |
MC-120 |
| 1. |
Cylinder Arrangement |
1 L |
1 x V |
1 x w |
2 x v |
2 x W |
3 x W |
3 x W |
| 2. |
Nos. of Cylinder |
1 |
2 |
3 |
4 |
6 |
9 |
12 |
| 3. |
Cylinder Bore (mm) |
160 |
160 |
160 |
160 |
160 |
160 |
160 |
| 4. |
Piston Stoke (mm) |
114 |
114 |
114 |
114 |
114 |
114 |
114 |
| 5. |
Suction Size (mm) Discharge
Size(mm) |
50 |
65 |
80 |
80 |
100 |
125 |
150 |
| 40 |
50 |
65 |
65 |
80 |
100 |
100 |
| 6. |
Swept Volume (Cu.m³/hr) |
135 |
270 |
405 |
540 |
810 |
1215 |
1620 |
| 7. |
Permissible Speed |
V-belt driven from 450 to 1000
R.P.M. In steps of 50 RPM (Minimum - 450 / Normal - 750 / Maximum -
1000 RPM) |
| 8. |
Oil Charge Capacity (Ltr.) |
12 |
14 |
16 |
20 |
22 |
30 |
35 |
| 9. |
Gross Weight (Khs) |
Gross Weight (Khs) |
860 |
970 |
1190 |
1400 |
1975 |
2850 |
|
 |
Technical Data : Refrigeration (NH3) Compressors -
Two Stage
| S. No |
Compressor
Model |
MC-21 |
MC-31 |
MC-42 |
MC-51 |
MC-63 |
MC-72 |
MC-84 |
MC-93 |
MC-102 |
| 1. |
Cylinder Arrangement |
1 x V |
2 x V |
2 x W |
2 x W |
3 x W |
3 x W |
4 x W |
4 x W |
4 x W |
| 2. |
Nos. Compressor L.P |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
| 3. |
Nos. Compressor H.P |
1 |
1 |
2 |
1 |
3 |
2 |
4 |
3 |
2 |
| 4. |
Cylinder Bore (mm) |
160 |
160 |
160 |
160 |
160 |
160 |
160 |
160 |
160 |
| 5. |
Piston Stroke (mm) |
114 |
114 |
114 |
114 |
114 |
114 |
114 |
114 |
114 |
| 6. |
Suction Size (mm) |
80 |
80 |
100 |
100 |
125 |
125 |
125 |
125 |
125 |
| 7. |
Discharge Size (mm) |
65 |
65 |
50 |
50 |
50 |
50 |
50 |
50 |
50 |
| 8. |
Swept Volume (m³/hr) |
275 |
412 |
548 |
687 |
823 |
960 |
1097 |
1234 |
1371 |
| 9. |
Permissible Speed |
V- belt driven from 450 to 1000
R.P.M in steps of 50 RPM (Minimum -450/ Normal -750 / maximum-1000
RPM) |
| 10. |
Oil Charge Capacity |
12 |
20 |
22 |
22 |
30 |
30 |
35 |
35 |
35 |
| 11. |
Cooling flow for each cylinder Jackit |
12 - LPM Cylinder at water inlet
temp. 35°C |
| 12. |
Gross Weight (kgs) |
970 |
1190 |
1400 |
1400 |
1975 |
1975 |
2850 |
2850 |
2850 |
|
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These are only guide lines. All specifications are subject to change
without notice.
