Name: B3 Mounted Electric Motors | HEM Motor
Brand: HEM Motor

B3 mounted electric motors are the most widely used foot mounted motor type in industry, fixed directly to a machine base frame, steel platform, concrete floor or motor base via the feet under the frame. Manufactured by HEM Motor, B3 motors provide secure, rigid mounting for horizontally operating machines and are delivered quickly from stock.

B3 Bağlantılı Elektrik Motorları - B3 Montajlı Elektrik Motorları

Technical Specifications

Mounting type: B3 (foot mounted motor)
Connection: via the feet under the frame to a base frame, platform, floor or motor base
Frame sizes: 63 – 355L (including 315HT)
Shaft and keyway design suitable for belt-pulley, coupling and gearbox connections
At high power ratings (315 kW and 355 kW, 1500 rpm), the 355 frame with Ø100 mm shaft is common in the Turkish market
Mounting codes: B3 = foot mounted motor, B5 = large flange footless motor, B35 = foot + large flange motor

Foot and Shaft Dimension Definitions

H: Height from the foot base to the shaft centre
A: Transverse distance between foot mounting holes
B: Longitudinal distance between foot mounting holes
D: Motor shaft diameter
E: Shaft extension length
K: Foot mounting hole diameter
Key dimension: Keyway dimension on the shaft; important for pulley, coupling or gearbox connection

Common B3 Motor Dimensions

Frame Size	H Shaft Height	A Foot Mounting Width	B Foot Mounting Length	D Shaft Diameter	E Shaft Length
63	63 mm	100 mm	80 mm	11 mm	23 mm
71	71 mm	112 mm	90 mm	14 mm	30 mm
80	80 mm	125 mm	100 mm	19 mm	40 mm
90S	90 mm	140 mm	100 mm	24 mm	50 mm
90L	90 mm	140 mm	125 mm	24 mm	50 mm
100L	100 mm	160 mm	140 mm	28 mm	60 mm
112M	112 mm	190 mm	140 mm	28 mm	60 mm
132S	132 mm	216 mm	140 mm	38 mm	80 mm
132M	132 mm	216 mm	178 mm	38 mm	80 mm
160M	160 mm	254 mm	210 mm	42 mm	110 mm
160L	160 mm	254 mm	254 mm	42 mm	110 mm
180M	180 mm	279 mm	241 mm	48 mm	110 mm
180L	180 mm	279 mm	279 mm	48 mm	110 mm
200M	200 mm	318 mm	267 mm	55 mm	110 mm
200L	200 mm	318 mm	305 mm	55 mm	110 mm
225S	225 mm	356 mm	286 mm	60 mm	140 mm
225M	225 mm	356 mm	311 mm	60 mm	140 mm
250M	250 mm	406 mm	349 mm	65 mm	140 mm
280S	280 mm	457 mm	368 mm	75 mm	140 mm
280M	280 mm	457 mm	419 mm	75 mm	140 mm
315S	315 mm	508 mm	406 mm	85 mm	170 mm
315M	315 mm	508 mm	457 mm	85 mm	170 mm
315L	315 mm	508 mm	508 mm	85 mm	170 mm
315HT	315 mm	Varies by manufacturer	Varies by manufacturer	100 mm	approx. 210 mm
355M	355 mm	610 mm	approx. 560 mm	100 mm	approx. 210 mm
355L	355 mm	610 mm	approx. 630 mm	100 mm	approx. 210 mm

Common Dimensions for 315 kW and 355 kW Motors in the Turkish Market

Power	Speed	Common Frame	Common Shaft Diameter in Turkey	Note
250 kW	1500 rpm	315HT / 355 frame	Ø100 mm	May vary by manufacturer
315 kW	1500 rpm	355M	Ø100 mm	Common size in the Turkish market
355 kW	1500 rpm	355M / 355L	Ø100 mm	Drawing verification required before ordering
400 kW	1500 rpm	355L	Ø100 mm	Preferred in heavy-duty applications

The values in the tables are general references; dimensions may vary by manufacturer, motor series, number of poles and special designs. Since two motors of the same kW rating can be built in different frame sizes, the old motor nameplate, frame size, foot hole spacing, shaft diameter, shaft length, key dimension and shaft height must be checked before ordering a replacement. If the wrong frame or shaft size is selected, the motor may not seat on the machine, the coupling alignment may be disturbed, the belt-pulley system may not run properly, or the mounting holes may not match the existing base.

Key Features

Secure machine mounting with a rigid foot connection
Easy maintenance and service thanks to the horizontal operating position
Practical removal, replacement and realignment
Convenient solution for coupling drives, belt-pulley systems and gearbox inputs
Efficient power transmission, low vibration and reduced bearing failure risk with the correct frame and shaft size
Reliable performance in heavy industry applications

Application Areas

Fans
Pumps
Compressors
Conveyor systems
Geared machines
Crushers and screening machines
Concrete batching plants
Agricultural and feed machinery
Packaging machines
Textile machines
Woodworking machines
General machine manufacturing

Stock and Ordering

B3 mounted electric motors, together with technical support for checking frame, foot and shaft dimensions before ordering, are delivered quickly from stock with HEM Motor manufacturer assurance and a best-price guarantee. For pricing and quotations, call us at +90 (532) 345 49 86 or send your request via our contact page.

B3 Mounted Electric Motors