Rotary screw
Risan single-stage PM VSD screw — named RK duty rows — Risan Electric — Wenling screw compressors
Risan single-stage PM VSD screw — named RK duty rows · Risan Electric — Wenling screw compressors
Datasheet
Product overview
Power: Exact offered motor/package input required · Pressure: Selected examples: 0.8 MPa · Flow: RK20/50/100: 2.3 / 6.2 / 12.6 m³/min
Risan's single-stage PM VSD page presents the 创优 family and two RK parameter tables. Selected same-pressure points are RK20: 2.3 m³/min at 0.8 MPa; RK50: 6.2 m³/min at 0.8 MPa; and RK100: 12.6 m³/min at 0.8 MPa. Within the RK50 column, the flow decreases from 6.8 at 0.7 MPa to 6.2 at 0.8, 5.6 at 1.0 and 5.0 m³/min at 1.2 MPa. Keep the pressure paired with its row rather than using the largest flow at every pressure.
The tables state direct drive, 380 V / 50 Hz and frequency-conversion starting. The selected RK50 envelope dimensions are 1560 × 1000 × 1290 mm with listed mass 640 kg and R1½ outlet. Confirm the offered full model suffix and revision: the original product image is marked RK50VB, while the parameter column is RK50. The short source table does not state complete volumetric test conditions or gauge/absolute pressure reference, so its discharge quantity is not automatically an ISO-tested FAD value.
Provide the working pressure at the use point, demand variation and minimum load, ambient/altitude, site electrical supply and existing compressor sequencing. Obtain package input across the intended loads, VSD operating limits and protections, installation/service clearances, lubricant and filtration requirements. Agree receiver, dryer, piping, condensate and maintenance responsibilities separately from the screw package.
| Catalog reference | RISAN-PM-VSD |
|---|---|
| Machine | Rotary screw |
| Power | Exact offered motor/package input required |
| Working pressure | Selected examples: 0.8 MPa |
| Published flow | RK20/50/100: 2.3 / 6.2 / 12.6 m³/min |
| Air quality | — |
| Duty | General industry |
| Supply | Not specified |
| Plant | Risan Electric — Wenling screw compressors |
| Selected RK20 point | 2.3 m³/min at 0.8 MPa |
| Selected RK50 point | 6.2 m³/min at 0.8 MPa |
| RK50 pressure/flow rows | 6.8/0.7; 6.2/0.8; 5.6/1.0; 5.0/1.2 (m³/min / MPa) |
| Selected RK100 point | 12.6 m³/min at 0.8 MPa |
| RK50 listed dimensions | 1560 × 1000 × 1290 mm |
| RK50 listed mass/outlet | 640 kg; R1½ |
| Published supply/drive | 380 V / 50 Hz; direct drive |
| Reference boundary | Discharge-volume conditions and pressure basis to obtain |
| Image | Original RK50VB family image; table uses RK50 naming |
Plant
Risan Electric — Wenling screw compressors
Wenling
The plant remains the seller. This desk issues the English duty sheet so quotes are comparable across clusters.
- RISAN-TWOSTAGE · Exact offered motor/package input required
- RISAN-LASER · Selected RG/RKG: 7.5–22 kW
Specification pages
Specifying a Rotary screw duty
| Duty | Write on the RFQ |
|---|---|
| 50 Hz 380 V screw compressor | Chinese plants build 50 Hz 380 V packages every day. They cannot retag a 60 Hz 460 V nameplate in the quotation without a motor change. Write the supply first. |
| Rotary screw compressor manufacturers in China | China already has more screw-compressor storefronts than a buyer can audit. This desk lists manufacturing plants against a duty sheet — kW, bar(g), FAD — and routes one English RFQ. |
| Compressor for laser cutting | Choose the air system from the laser maker's gas specification. The compressor motor rating and laser power do not, by themselves, determine the required pressure, flow or air quality. Identify whether the supply is for cutting assist gas, machine services or both before requesting a package. |
Same type
Related Rotary screw products
Compare the published product information for each manufacturer.
| Catalog ref. | Type | Power | Pressure | Flow | Air quality | Plant | |
|---|---|---|---|---|---|---|---|
 KAISHAN-LGKaishan LG stationary screw air compressors
|
Rotary screw | Selected LG model | Selected duty pressure | Selected flow and reference | — | Kaishan | RFQ |
| LIUTECH-LU-IILU II large two-stage oil-injected screw compressors | Rotary screw | 250–355 kW · overview band | Model-specific duty to be agreed | 45–72 m³/min · overview, not duty row | — | LIUTECH | RFQ |
 SOLLANT-FIXED-SCREWSollant 11 kW rotary screw air compressor
|
Rotary screw | 11 kW | 7–12 bar · selected configuration | Selected-pressure capacity to be agreed | — | Sollant | RFQ |
 HANDE-TWOSTAGE-PMHD-EPM2T two-stage PM variable-speed screw compressors
|
Rotary screw | 37 kW · HD-EPM2T37 example | 0.5 / 0.8 / 1.0 / 1.25 MPa | 6.8 m³/min at 0.8 MPa · HD-EPM2T37 | — | Hande | RFQ |
 GANEY-OGOG / SOGFD air-cooled single-screw compressors
|
Rotary screw | 22 kW · SOGFD22 group | 0.7 / 0.8 / 1.0 / 1.25 MPa | 3.4 m³/min at 0.8 MPa · SOGFD22 | — | Ganey | RFQ |
 AE-APMAPM / APM-S permanent-magnet screw compressors
|
Rotary screw | 37 kW · APM37A / APM37A-S examples | — | Pressure-matched delivery to be agreed | — | Zhongshan AE Machinery | RFQ |
RISAN-PM-VSD: Voltage and frequency matter as much as bar. State both. Include the required operating conditions with your enquiry.
Issue RFQ