Is VSD always cheaper to run?
Only if the load actually varies. A flat 22 kW duty can be cheaper as fixed speed. Put the load profile on the sheet.
Parameter duty
22 kW VSD is a flow band, not a single nameplate FAD. The plant needs min/max flow at the working pressure, or it will quote a fixed-speed machine with an inverter sticker.
What belongs on the RFQ
Small VSD screws are often bought for workshops that do not run a flat 22 kW load. If the RFQ only says “22 kW inverter screw”, the plant cannot size the airend turn-down or the dryer.
State working pressure, the lowest and highest FAD you expect, whether the motor is PM or induction, 50/60 Hz, and if the starter and cabinet must be tropicalised. Altitude matters more on a small package than buyers expect.
Matching rows are published oil-injected screw series from listed Chinese plants. PM VSD is a plant claim against a stated motor — we do not print IE4 on a page that the factory did not document.
Listings below are Chinese manufacturing plants drawn from public factory data and files we hold. A row is not exclusive agency, not a “verified factory” badge, and not a claim the plant appointed CompressorB2B. Plants that finish onboarding receive RFQs in the factory desk.
Matching plants
The plant remains the seller. Quotes are comparable because the RFQ is the same sheet.
| Plant | Cluster | Specialty | Documents | Export |
|---|---|---|---|---|
|
|
Ningbo | Screw air-ends · Oil-injected/oil-free screw · Process gas |
On RFQ
|
Export ready |
|
|
Shanghai | Screw · Oil-free · Centrifugal |
TUV
|
Export ready |
|
|
Shanghai | Oil-injected/oil-free screw · Piston · Centrifugal (FS-Elliott) |
ISO 9001CEAPI
|
Export ready |
| Hanbell Shanghai | Shanghai | Screw air-ends · Refrigeration screw · Oil-free scroll |
On RFQ
|
Export ready |
|
|
Xiamen | PM VSD screw · Oil-free · Piston |
On RFQ
|
Export ready |
|
|
Wuxi | Oil-injected/oil-free screw · Laser-cutting packages · Booster |
ISO 8573CEASMETUVAPI
|
Export ready |
|
|
Shanghai | Screw · Portable/diesel screw · Centrifugal |
On RFQ
|
Export ready |
|
|
Shanghai | PM VSD screw · Oil-free screw/scroll · Two-stage |
CETUVAPI
|
Export ready |
|
|
Shanghai | PM VSD screw · Two-stage · Low-pressure |
CCC
|
On RFQ |
|
|
Shanghai | Screw · Oil-free · Centrifugal |
On RFQ
|
Export ready |
|
|
Shanghai | Oil-injected screw · Oil-free · Centrifugal |
On RFQ
|
Export ready |
|
|
Wuxi | Oil-free dry screw · Two-stage PM VSD · Portable |
API
|
On RFQ |
Published series
Where a factory published a series, it is listed. Empty kW / FAD cells are confirm-on-RFQ.
| Model | Type | Power | Pressure | FAD | Air quality | Plant | |
|---|---|---|---|---|---|---|---|
| KAISHAN-LGLG oil-injected rotary screw | Rotary screw | 7.5–400 kW | 7–13 bar(g) | on RFQ | — | Kaishan | RFQ |
| BAOSI-BLTBLT packaged oil-injected screw | Rotary screw | on RFQ | 7–13 bar(g) | on RFQ | — | Baosi | RFQ |
| BAOSI-AIRENDScrew air-ends (OEM) | Rotary screw | on RFQ | on RFQ bar(g) | on RFQ | — | Baosi | RFQ |
| HANBELL-AAAA series screw air-ends | Rotary screw | on RFQ | on RFQ bar(g) | on RFQ | — | Hanbell | RFQ |
| SCR-PM-VSDPM VSD oil-injected screw | Rotary screw | on RFQ | 7–10 bar(g) | on RFQ | — | SCR | RFQ |
| XINLEI-PMPM VSD screw | Rotary screw | on RFQ | 7–13 bar(g) | on RFQ | — | Xinlei | RFQ |
| FUSHENG-SASA oil-injected screw | Rotary screw | on RFQ | 7–13 bar(g) | on RFQ | — | Fusheng | RFQ |
| XIYA-PMTwo-stage PM VSD screw | Rotary screw | on RFQ | on RFQ bar(g) | on RFQ | — | Xiya | RFQ |
| SE-SCREWOil-injected screw | Rotary screw | on RFQ | 7–13 bar(g) | on RFQ | — | Success Engine | RFQ |
| DENAIR-SCREWOil-injected screw | Rotary screw | on RFQ | 7–13 bar(g) | on RFQ | — | Denair | RFQ |
| JAGUAR-PMPM VSD screw | Rotary screw | on RFQ | 7–13 bar(g) | on RFQ | — | Jaguar | RFQ |
| JUFENG-SCREWOil-injected screw | Rotary screw | on RFQ | 7–13 bar(g) | on RFQ | — | Jufeng | RFQ |
FAQ
Only if the load actually varies. A flat 22 kW duty can be cheaper as fixed speed. Put the load profile on the sheet.
Only if a published plant series exists. This page is the duty. Missing FAD stays confirm-on-RFQ.
22 kW VSD screw compressor: Voltage and frequency matter as much as bar. Typical first reply: 1–2 working days after the plant confirms it can hold the duty.
Issue RFQ