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Products
Oil-Free Screw Compressor


Simple

One screw rotor and two gate rotors which are positioned at right angle to the axis constitute two compressing rooms. Therefore, the screw rotor with six grooves compresses as many as 12 times per rotation.

Quietness

Without applying thrust load to the axis direction of the rotor, the force in the circumference direction rotates quietly with good balance. As a result, the load to the bearing is lightened, minimizing the generation of noise or vibration.

Durability

The gate rotors are rotated following the rotation of the screw rotor along its gear. The water film formed on the screw rotor’s gear and the free floating mechanism maintains the high efficiency for a long time (in case of water lubrication).

High Efficiency

Since the lubrication water is jetted in the compressing process, the compression is done smoothly under almost even temperature, realizing ideal, safe and highly efficient compression with slow rotation (in case of water lubrication).

MODEL MAXIMUM WORKING PRESSURE FREE AIR DELIVERY OF UNIT AT WORKING PRESSURE MOTOR NOISE LEVEL Lubricating Water
Amount
Rotation Rate AIR OUTLET DISCHARGE SIZE  WEIGHT DIMENSIONS 
  Bar PSI l/s m3/min CFM kW HP dBA L rpm   KG L X W X H
(mm) 
ZW-7.5 7 102  20  1.20  43  7.5 10 61 20 2940 G1 480 1135×800×1000
8 116  18  1.10  39 
10 145  17  1.00  36 
ZW-11 7 102  27  1.60  57  11 15 61 20 2940 G1 500 1135×800×1000
8 116  25  1.50  54 
10 145  22  1.30  46 
ZW-15 7 102  40  2.40  86  15 20 61 27 2940 G1 520 1400×1000×1200
8 116  38  2.30  82 
10 145  33  2.00  71 
ZW-18.5 7 102  52  3.10  111  18.5 25 61 27 2940 G1 520 1400×1000×1200
8 116  47  2.80  100 
10 145  42  2.50  89 
ZW-22 7 102  62  3.70  132  22 30 61 27 2940 G1 560 1400×1000×1200
8 116  57  3.40  121 
10 145  50  3.00  107 
ZW-30 7 102  87  5.20  186  30 40 64 40 2940 G1½ 1050 1920×1170×1320
8 116  78  4.70  168 
10 145  72  4.30  154 
ZW-37 7 102  102  6.10  218  37 50 66 40 2940 G1½ 1050 1920×1170×1320
8 116  93  5.60  200 
10 145  83  5.00  179 
ZW-45 7 102  125  7.50  268  45 60 66 40 2960 G2 1610 1920×1170×1320
8 116  113  6.80  243 
10 145  100  6.00  214 
ZW-55 7 102  167  10.00  357  55 75 66 100 2960 G2 1610 1930×1320×1535
8 116  150  9.00  321 
10 145  130  7.80  279 
ZW-75 7 102  217  13.00  464  75 100 70 100 2960 G2 1880 1930×1320×1535
8 116  200  12.00  429 
10 145  167  10.00  357 
ZW-90 7 102  258  15.50  554  90 125 70 180 2970 DN80 2700 2150×1600×1680
8 116  233  14.00  500 
10 145  208  12.50  446 
ZW-110 7 102  333  20.00  714  110 150 72 200 2970 DN80 3100 2150×1600×1800
8 116  300  18.00  643 
10 145  267  16.00  571 
ZW-132 7 102  417  25.00  893  132 180 72 240 2970 DN80 3250 2150×1600×1680
8 116  383  23.00  821 
10 145  333  20.00  714