SAYI BMF screw — published PM control and rating clarifications — SAYI (Wenling works)

Datasheet

Product overview

Pressure: Selected table rows:8 bar · Flow: Selected confirmed rows:1.05–9 m³/min

SAYI's B-series single-stage screw page uses a general family title, but its BMF table explicitly describes permanent-magnet variable-frequency starting. This selection therefore does not infer fixed-speed operation from the letter B. Obtain the exact offered motor/drive/control schedule.

At the printed 8 bar condition, BMF8-8 is 7.5 kW and 1.05 m³/min, BMF11-8 is 11 kW and 1.7, BMF15-8 is 15 kW and 2.2, BMF22-8 is 22 kW and 3.3, BMF30-8 is 30 kW and 5, BMF45-8 is 45 kW and 7.25, and BMF55-8 is 55 kW and 9 m³/min. These are manufacturer table values; pressure convention and volume/FAD test basis require the actual offered sheet.

BMF22-8 has G1 outlet, 1200 × 840 × 1150 mm and 400 kg. BMF30-8 has G1½ outlet, 1370 × 950 × 1360 mm and 515 kg. BMF45-8 gives G2, 1670 × 1000 × 1500 mm and 730 kg; BMF55-8 gives DN65, 1900 × 1300 × 1660 mm and 1100 kg. Do not substitute the YMF22-8 envelope or mass just because its power/pressure/flow match.

Two rows need written correction before selection. The BMF19-8 motor cell prints 1805; its intended motor rating is not guessed. BMF37-8 prints 37 kW and 3.6 m³/min, lower than the BMF30-8 row and different from YMF37-8's 6.3. The source value is not silently changed to 6.3. Request a revised model sheet covering motor, delivered flow and operating condition.

Send point-of-use pressure, reference flow, average/peak demand, running pattern and electrical supply. Compare capacity and package input at the same duty. Agree variable-speed range, low-load strategy, start/stop limits, air treatment, cooling/ambient limits, condensate handling and maintenance access. Confirm drawings, outlet/interfaces, protective controls, acceptance tests, manuals, spare parts and delivery/service/warranty terms. The original B-page machine photo is a published family example, not confirmation of each model's package.

Catalog reference	SAYI-B-SCREW
Machine	Rotary screw
Power	—
Working pressure	Selected table rows:8 bar
Published flow	Selected confirmed rows:1.05–9 m³/min
Air quality	—
Duty	General industry
Supply	Not specified
Plant	SAYI (Wenling works)
Family	B-series single-stage screw
BMF8-8	7.5 kW;8 bar;1.05 m³/min;G3/4;930 × 680 × 920 mm;185 kg
BMF22-8	22 kW;8 bar;3.3 m³/min;G1;1200 × 840 × 1150 mm;400 kg
BMF30-8	30 kW;8 bar;5 m³/min;G1½;1370 × 950 × 1360 mm;515 kg
BMF45-8	45 kW;8 bar;7.25 m³/min;G2;1670 × 1000 × 1500 mm;730 kg
BMF55-8	55 kW;8 bar;9 m³/min;DN65;1900 × 1300 × 1660 mm;1100 kg
Control column	Permanent-magnet variable-frequency
BMF19-8 clarification	Motor cell prints1805;intended rating unresolved
BMF37-8 clarification	Source37 kW/8 bar/3.6 m³/min;obtain revised duty confirmation
Flow basis	Published volume-flow table;reference/test basis to agree