Hitachi Compressor (Suzhou): the Sullair screw-compressor operation
日立压缩机（苏州）有限公司, formerly Suzhou Sullair, was established in 2007 and began operation in November 2008. Sullair joined Hitachi in July 2017; the Suzhou plant took its current name in 2023.
The official profile describes a 23,800 m² site and 14,100 m² building area, including offices, production and test rooms. A Suzhou Industrial Park government report dated 23 August 2024 corroborates the renaming and describes stationary/portable screw-compressor and screw-vacuum production and testing.
The site and dated report describe more than ten production lines and supply to China, Southeast Asia and other regions. These are manufacturing context, not current spare capacity or a promised delivery schedule.
Plant air · oil-flooded screw
AS and TS: choose the actual operating point and control arrangement
AS04–110 · load/unload and offered VSD configuration
The technical tab publishes 7.6–13.0 bar and 0.4–20.1 m³/min family ranges. The body describes load/unload control and also lists integrated VSD and communications. Establish the exact standard/optional controller and drive in the offer.
TS315–355 · two-stage variable capacity
The technical-tab ranges are 315–355 kW, 5–12.5 bar and 49.8–73.1 m³/min. Two-stage compression, separator arrangement and variable-capacity/inlet control are described; heat recovery and VSD are mentioned as options.
These are independent family limits, not paired model-duty rows. Request the selected pressure/flow conditions and measured package input across your actual load profile.
AS/TS controls, duty and air-room scope →Process cleanliness · dry oil-free screw
DS: retain the separate power groups and verify the purity scope
The DS page describes a jointly developed Hitachi-Sullair dry airend, coated rotors and sealing, an IP55 motor, intelligent control and fixed-speed/VSD arrangements. GS water-injected screw and SRL/VT scroll are separate paths.
The manufacturer claims Class 0. Obtain current issuer documentation, exact model scope and test conditions for the offered unit. Specify downstream treatment and the buyer's accepted purity measurement point.
Group limits do not create one machine combining maximum power, maximum pressure and maximum flow. Confirm the actual current model and revision, including the page's newer 180–280 kW notation within its larger group.
22–120 kW
- Maximum-pressure selections
- 7.0–10.3 bar
- Published flow envelope
- 3.2–21.5 m³/min
132–160 kW
- Maximum-pressure selections
- 7.0–10.0 bar
- Published flow envelope
- 18.7–30.0 m³/min
180–450 kW
Also marked “newer 180–280 kW”
- Maximum-pressure selections
- 7.0–10.3 bar
- Published flow envelope
- 26.9–81.8 m³/min
All are published group envelopes for two-stage fixed-speed/VSD arrangements. Complete volume reference and gauge/absolute pressure basis must be confirmed. Separately mentioned single-stage low-pressure equipment does not inherit these ratings.
DS groups, exact-model selection and purity evidence →Outdoor tools · diesel screw
185 portable: an explicit 7 barg duty, with engine and destination details to agree
- Nominal volumetric flow
- 5.2 m³/min · 185 CFM
- Rated discharge pressure
- 7 barg · 101.5 psi
- Engine rating
- Obtain the actual engine datasheet
The page describes China-IV emissions, AWF lubricant, an external separator element, two-stage intake filtration with a safety element and a digital controller.
The pressure is explicitly gauge pressure. Complete flow reference/test conditions are not supplied in the short tab. China-IV is not automatic acceptance in every destination.
185 tool duty, engine and transport inputs →What an outdoor-tool enquiry should include
Tool count and simultaneous use, pressure at the tools and hose losses, outdoor ambient/altitude, daily load profile, fuel/engine requirements, exhaust/noise placement, outlet treatment, lifting and actual towing/brake arrangements. Agree engine/compressor wear parts and commissioning responsibilities before dispatch.
Make the offer, inspection and handover refer to the same machine
Identify
Exact model/suffix, control and drive, nameplate manufacturer, production address and revision-controlled duty. For an existing unit, include its serial and actual operating conditions.
Specify
Use-point pressure, peak/low-load airflow, volume reference, air quality, electrical or engine supply and ambient/altitude. Separate package input from motor or engine rating.
Integrate
Receiver/treatment and condensate, controller sequencing, cooling/ventilation, lifting/foundations and maintenance access; stationary installation or outdoor transport scope as appropriate.
Accept
Current inspection/performance test records, actual purity/emissions documents where required, manuals, controller documentation, wear parts, commissioning and destination support responsibilities.
Prepare a Suzhou Sullair enquiry for AS/TS, DS or 185
Choose the actual air duty, attach conditions and identify the documents required at acceptance.
Prepare the Sullair air-duty enquiry →Questions before selecting a Suzhou Sullair package
Is the American brand founding date the Suzhou factory date?
No. The brand dates to 1965; the Suzhou entity was established in 2007, began operation in 2008 and took its current name in 2023.
Can I combine the ends of a DS group range into one rated model?
No. Obtain the selected current model's paired duty and reference conditions. The page separates power groups and notes newer models within one group.
Does the185 figure specify engine power?
No. Its technical tab publishes 5.2 m³/min nominal flow and 7 barg pressure. Obtain the actual engine and destination emissions documents.
Are GS water-injected and SRL/VT scroll machines the same DS architecture?
No. The official oil-free catalog separates dry screw DS, water-injected screw GS and scroll SRL/VT paths. The existing DS listing remains specific to dry screw equipment.