Shanghai Crownwell · Company established 2006
Compressors, air treatment and the system around the machine
Crownwell describes development, manufacturing and assembly concentrated in China. Its business areas include industrial air, oil-free air, portable air, specialty rental and compressor energy-saving services.
The equipment catalog includes dryers, filters, receivers, air management and service parts. Establish the selected machine and the complete system scope in the same quotation.
Name the contracting and supporting entities
The manufacturer describes a 2015 logistics/service expansion in Shanghai and Indonesia. Confirm who manufactures, contracts, ships and supports the selected equipment. Agree destination service and spare availability; the company's general network description is not an attendance or delivery commitment.
Specialty rental is described for China and some Asian countries. A rental or another-brand supply proposal needs its own availability and responsibility terms.
CWD22 · CWD22 PM · CWD22-2S
Three 22 kW entries with different handling and duty
The oil-injected catalog distinguishes fixed-speed CWD, permanent-magnet PM and two-stage 2S versions. Keep the suffix on the model, duty sheet and drawing.
| Version | 7 / 8 bar(g) FAD m³/min | 10 / 13 bar(g) FAD m³/min | Size L × W × H mm / mass |
|---|---|---|---|
| CWD22 Fixed speed | 3.8 / 3.6 m³/min | 3.2 / 2.8 m³/min | 1,280 × 850 × 1,160 mm 580 kg |
| CWD22 PM | 3.8 / 3.6 m³/min | 3.2 / 2.8 m³/min | 1,120 × 850 × 1,160 mm 520 kg |
| CWD22-2S Two stage | 4.2 / 4.1 m³/min | 3.5 / 3.2 m³/min | 1,480 × 850 × 1,180 mm 820 kg |
Capacity and handling
The PM entry has a shorter cabinet and lower mass than CWD22; the two-stage entry has different delivery and is heavier. Request the offered version's current drawing, lifting points, installation and service access.
Controls and input
Crownwell describes flexible-coupling direct drive and offers multiple-unit/base-load control options. Agree the actual sequence, operating range and package input over the recorded load profile; equal motor kW is not equal energy consumption.
CW OF · OF VSD · OF PM · OF LP
Oil-free selection needs both pressure and a demand range
The oil-free page has four separate control/duty tables. Compare the 22 kW versions at the required operating pressure, then establish the system's delivered quality.
At 7 bar(g), the published 22 kW entries differ
- CW22 OF
- 3.7 m³/minFixed-speed row · 655 kg
- CW22 OF VSD
- 2.2–3.7 m³/minVariable-frequency row · 675 kg
- CW22 OF PM
- 0.6–3.7 m³/minPermanent-magnet row · 675 kg
All three list 1,400 × 1,000 × 1,200 mm. Their stated flow ranges help frame the control discussion; obtain the input curve and operating limits rather than assuming a saving from minimum flow.
Specify quality at the user
Identify product-contact air, instruments or another process. Set oil, particle and moisture limits; request applicable selected-model documents and architecture/utility requirements. Itemize drying, filters, receiver, drains and distribution acceptance.
Oil-free versions and process-air inputs →CW / CWH diesel portable equipment
Bring the air duty and transport envelope together
The portable table separates engine power, free-air delivery and maximum working pressure. The engine kW column is not a compressor motor-input rating.
Specify tools/process consumption, outlet pressure, hose losses, hours and ambient/altitude/dust conditions. Obtain delivery at the actual working duty; a maximum-pressure entry is not a full pressure/flow curve.
| Model | Air / maximum pressure | Engine / mass | L × W × H mm |
|---|---|---|---|
| CW130 | 3.6 m³/min 7 bar(g) | 27 kW 860 kg | 2,820 × 1,470 × 1,360 mm |
| CWH300 | 8.5 m³/min 14.5 bar(g) | 110 kW 2,480 kg | 4,000 × 2,080 × 2,310 mm |
| CWH1200 | 33.0 m³/min 25 bar(g) | 412.5 kW 6,800 kg | 4,700 × 2,100 × 2,500 mm |
Resolve the destination requirements before transport
Request actual engine identification, emissions requirements, fuel/service arrangements and the offered tow/lifting configuration. Agree shipping dimensions/mass, outlet connections and access. A trailer photograph alone does not establish road approval or towing compatibility.
Diesel portable duties and enquiry conditions →Compare on a stated basis
Carry the reference conditions into acceptance
Crownwell states ISO 1217 Annex C, edition 4 (2009), with 1 bar absolute inlet, 20°C intake and 0% relative humidity. Its noise statement refers to ISO 2151:2004 at maximum operating pressure/speed with ±3 dB(A) tolerance.
Agree the selected-model test basis and site conditions. A catalog noise value is not a prediction for every workplace or measurement distance.
Define what the complete offer includes
- Equipment and controls: exact suffix, pressure/delivery, load profile, input and control sequence.
- Delivered air system: compressor, receiver, dryer, filter grades, drains, condensate/oil-water treatment and controls.
- Installation: electrical/cooling conditions, drawing, service access; engine and tow/transport requirements for portable units.
- Acceptance and support: model/serial records, performance/quality tests, manuals, consumables, commissioning, warranty and destination support.
Choose the Crownwell route and attach the duty
Include the full version name and the conditions that determine capacity, installation and system scope.
Prepare a Crownwell enquiry →Crownwell equipment questions
Are CWD22 and CWD22 PM interchangeable in the installation?
They share the listed delivery entries, but cabinet length and mass differ: 1,280 mm / 580 kg versus 1,120 mm / 520 kg. Request the selected drawing and actual controls/input; equal motor power does not establish an identical package.
Why compare OF VSD and OF PM minimum flow?
At 7 bar(g), the CW22 rows list 2.2 and 0.6 m³/min minimums respectively. Match the actual demand envelope and obtain the input/control curve. Those range entries alone do not establish an energy-saving percentage.
Can CW22 OF LP provide 5.2 m³/min at 7 bar?
Its published 5.2 m³/min entry is at 4 bar(g). The standard CW22 OF table lists 3.7 m³/min at 7 bar(g). Keep pressure and model together.
Does the CWH1200 picture establish a towable package for my country?
Agree actual trailer, tow/lifting arrangement, engine/emissions and destination road-use requirements. The image and catalog dimensions do not establish local road approval.