B35 Mounted Electric Motors

B35 mounted electric motors are industrial electric motors that have both a foot mounting and a large flange mounting. In this mounting type there are B3 type foot mountings underneath the motor body, and a B5 type large flange is located at the front of the motor. This way the motor can be fixed to the machine frame by its feet, and it can also be connected through the front flange to a gearbox, pump, fan, compressor or special machine body.

B35 Flanged Electric Motors - B35 Mounted Electric Motors

The B35 mounting type is frequently preferred because it offers versatile usage advantages in industry. Thanks to both foot mounting and flange mounting options, it helps the motor to be connected to the machine in a more solid, balanced and secure manner. Especially in applications where high power is transmitted, supporting the motor not only through the flange but also through its feet increases mechanical strength and helps reduce vibrations that may occur during operation.

What Is a B35 Mounted Electric Motor?

A B35 mounted electric motor can be considered as the combination of a B3 foot-mounted motor and a B5 large flange motor. There are feet underneath the motor and a large flange on the front cover section. Thanks to this structure, the motor can adapt to different machine connections.

B35 motors are generally used in applications where the motor needs to both rest on the frame and be connected to the equipment through the flange. This connection type is especially preferred in geared systems, large pumps, fans, crushers, conveyor systems, concrete batching plants, mixers, compressors and heavy industrial machinery.

Correct dimension selection is very important in B35 mounted motors. Because in these motors both the foot mounting dimensions and the flange dimensions must be compatible with the machine. Making a selection based only on motor power and speed is not correct. The existing motor's body type, shaft diameter, shaft length, foot hole spacing, flange diameter, centering diameter and connection holes must definitely be checked.

Where Are B35 Mounted Motors Used?

B35 foot-mounted and large flange electric motors are used in many industrial applications where mechanical strength and correct alignment are important. They are an ideal solution especially in systems where the motor needs to be both supported from the base and connected to the machine through the flange.

Their main areas of use are as follows:

  • Geared systems
  • Pump applications
  • Fan and ventilation systems
  • Compressors
  • Conveyor belt systems
  • Crusher and screening machines
  • Concrete batching plants
  • Mixer and agitator systems
  • Agricultural machinery
  • Packaging machines
  • Textile machines
  • Woodworking machines
  • General machine manufacturing
  • Heavy industrial applications

B35 mounted motors provide an advantage especially in applications that require high torque and where the motor needs to be fixed more solidly in mechanical terms. While the foot mounting carries the weight of the motor, the flange mounting helps the motor work on the same axis as the equipment.

What Should Be Considered When Selecting a B35 Mounted Motor?

When selecting a B35 mounted electric motor, both the B3 foot dimensions and the B5 flange dimensions must be checked together. When the wrong body or wrong flange dimension is selected, the motor may not fit the machine, the connection holes may not match, or the motor shaft may not be on the same axis as the equipment shaft.

The main dimensions to be considered in B35 mounted motors are as follows:

H dimension: The height of the motor shaft center from the foot base.
A dimension: The lateral distance between the foot mounting holes.
B dimension: The longitudinal distance between the foot mounting holes.
D dimension: The motor shaft diameter.
E dimension: The motor shaft extension length.
M dimension: The center diameter of the flange connection holes.
N dimension: The diameter of the flange centering spigot.
P dimension: The outer diameter of the flange.
S dimension: The diameter of the flange connection hole.
K dimension: The diameter of the foot mounting hole.
Key dimension: The dimension of the keyway on the shaft.

During B35 motor replacements, the old motor's nameplate, body type and dimensions must be carefully checked. Two motors with the same kW power can be manufactured in different body dimensions. For this reason, especially in applications where a coupling, gearbox, pump or fan connection will be made, the shaft diameter, shaft length, flange center and foot dimensions must definitely be verified before ordering.

Common Dimensions in B35 Mounted Electric Motors

The table below is a general reference for B35 mounted electric motors commonly used in the Turkish market. Dimensions may vary according to the manufacturer, motor series, number of poles and special design. They must definitely be checked with a technical drawing or catalog dimension before ordering.

Body TypeH Shaft HeightA Foot WidthB Foot LengthD Shaft DiameterE Shaft LengthM Flange Hole DiameterN Centering DiameterP Flange Outer Diameter
6363 mm100 mm80 mm11 mm23 mm115 mm95 mm140 mm
7171 mm112 mm90 mm14 mm30 mm130 mm110 mm160 mm
8080 mm125 mm100 mm19 mm40 mm165 mm130 mm200 mm
90S90 mm140 mm100 mm24 mm50 mm165 mm130 mm200 mm
90L90 mm140 mm125 mm24 mm50 mm165 mm130 mm200 mm
100L100 mm160 mm140 mm28 mm60 mm215 mm180 mm250 mm
112M112 mm190 mm140 mm28 mm60 mm215 mm180 mm250 mm
132S132 mm216 mm140 mm38 mm80 mm265 mm230 mm300 mm
132M132 mm216 mm178 mm38 mm80 mm265 mm230 mm300 mm
160M160 mm254 mm210 mm42 mm110 mm300 mm250 mm350 mm
160L160 mm254 mm254 mm42 mm110 mm300 mm250 mm350 mm
180M180 mm279 mm241 mm48 mm110 mm300 mm250 mm350 mm
180L180 mm279 mm279 mm48 mm110 mm300 mm250 mm350 mm
200M200 mm318 mm267 mm55 mm110 mm400 mm350 mm450 mm
200L200 mm318 mm305 mm55 mm110 mm400 mm350 mm450 mm
225S225 mm356 mm286 mm60 mm140 mm400 mm350 mm450 mm
225M225 mm356 mm311 mm60 mm140 mm400 mm350 mm450 mm
250M250 mm406 mm349 mm65 mm140 mm500 mm450 mm550 mm
280S280 mm457 mm368 mm75 mm140 mm500 mm450 mm550 mm
280M280 mm457 mm419 mm75 mm140 mm500 mm450 mm550 mm
315S315 mm508 mm406 mm85 mm170 mm600 mm550 mm660 mm
315M315 mm508 mm457 mm85 mm170 mm600 mm550 mm660 mm
315L315 mm508 mm508 mm85 mm170 mm600 mm550 mm660 mm
315HT315 mmVaries by manufacturerVaries by manufacturer100 mmaround 210 mmaround 740 mmaround 680 mmaround 800 mm
355M355 mm610 mmaround 560 mm100 mmaround 210 mm740 mm680 mm800 mm
355L355 mm610 mmaround 630 mm100 mmaround 210 mm740 mm680 mm800 mm

Dimensions Suitable for the Turkish Market in High-Power B35 Motors

In high-power electric motors, dimension selection becomes more critical compared to small and medium-power motors. In the Turkish market, especially in 315 kW and 355 kW 1500 rpm B35 mounted electric motors, a 355 body and a Ø100 mm shaft diameter are commonly used.

For this reason, in 315 kW or 355 kW motor replacements, power and speed information alone is not sufficient. The existing motor's body type, foot mounting spacing, shaft diameter, shaft length, key dimension, flange diameter and centering dimension must definitely be checked.

The high-power B35 motor dimensions frequently encountered in the Turkish market are generally as follows:

PowerSpeedCommon BodyShaft Diameter Common in TurkeyMounting Type
250 kW1500 rpm315HT / 355 bodyØ100 mmB35
315 kW1500 rpm355MØ100 mmB35
355 kW1500 rpm355M / 355LØ100 mmB35
400 kW1500 rpm355LØ100 mmB35

Advantages of B35 Mounted Motors

B35 mounted electric motors offer both the foot mounting and the flange mounting advantage in the same body. While the foot mounting ensures the motor is solidly carried on the frame, the large flange mounting helps the motor work on the same axis as the equipment.

Thanks to this structure, the motor's mechanical strength increases, alignment is done more soundly, and vibrations that may occur during operation can be reduced. Especially in high-power motors, supporting the motor with a foot mounting instead of carrying the load only through the flange contributes to safer operation of the system.

B35 motors are also advantageous in terms of maintenance and replacement. Depending on the machine design, since the motor is fixed both by its feet and by its flange, connection safety becomes higher during operation. When the correct dimension is selected, bearing life, coupling life and overall system efficiency are positively affected.

The Difference Between B3, B5 and B35 Mounting

B3, B5 and B35 mounting types are among the most commonly used connection types in electric motors.

B3 motor: Foot-mounted motor type. It is connected to the frame through the feet underneath the motor body.
B5 motor: Large flange footless motor type. The motor is connected to the machine through the front flange.
B35 motor: Foot-mounted + large flange motor type. It has both a foot mounting and a large flange mounting.

The B35 mounting type is especially preferred in heavy-duty applications because it offers the advantages of both B3 and B5 connections together.

Hem Motor B35 Mounted Electric Motors

As Hem Motor, we offer industrial enterprises strong, efficient and long-lasting solutions in B35 mounted electric motors. With a wide range of power options from 0.55 kW to 355 kW, we provide B35 mounted motor options suitable for fan, pump, compressor, gearbox, conveyor, crusher, screen, concrete batching plant, mixer and machine manufacturing applications.

Our B35 foot-mounted and large flange electric motors stand out with their advantages of high efficiency, strong body structure, 100% copper winding, quality bearing use and design suitable for heavy operating conditions. Thanks to the motor options in the IE3 and IE4 efficiency classes, energy savings are achieved, while long-lasting and reliable operation is obtained thanks to the strong mechanical structure.

Selecting the correct body, shaft and flange dimension is especially important in high-power motors. As Hem Motor, in high-power B35 mounted electric motors such as 315 kW, 355 kW and 400 kW, we offer solutions in body, flange and shaft dimensions suitable for Turkish industrial applications. By carrying out a technical dimension check before ordering, we support our customers in selecting the correct motor.

For your B35 mounted electric motor needs, Hem Motor is your reliable solution partner with the advantage of wide stock, a suitable price policy and fast delivery support.