What is the difference between a Techtop TAI 71A and 71B frame?

Both 71A and 71B are frame variants within the Techtop TAI series. According to Techtop, the difference relates to the motor's internal design and performance requirements rather than the external mounting dimensions. The same TAI 71 dimensional drawings can be used for corresponding A and B variants. The “B” frame designation should not be confused with the separate TAIB brake motor series.

Is this Techtop 0.25kW motor single phase or three phase?

This is a three phase electric motor rated for 230/415V at 50Hz.

What speed does this motor run at?

This is a 4 pole motor with a full-load speed of approximately 1365 RPM.

What frame size is this motor?

This motor uses a 71A frame. Always compare the dimensional information and mounting arrangement with your existing motor when selecting a replacement.

What is the shaft diameter?

This motor has a 14mm shaft diameter. Shaft dimensions should always be checked against the existing coupling, pulley or driven equipment before installation.

What is the full-load current?

The motor has a full-load current of approximately 0.75A at 400V.

How much torque does this motor produce?

The motor produces approximately 1.74Nm of torque at full load.

Is this motor suitable for continuous operation?

Yes. This motor has an S1 continuous-duty rating when correctly selected, installed and operated within its rated specifications.

What protection rating does this motor have?

The motor has an IP55 protection rating and TEFC construction, with Class F insulation and Class B temperature rise.

What mounting options are available?

Common mounting configurations include B3 Foot Mount, B5 Flange Mount, B14 Face Mount, B34 Foot & Face Mount and B35 Foot & Flange Mount.

Can this motor replace another brand?

Potentially, yes. Compare the power rating, voltage, number of poles, RPM, frame size, shaft diameter, mounting configuration and physical dimensions before selecting a replacement.

How can I confirm whether this motor will fit my machine?

Contact Paddle Wholesale Australia with a clear photo of the existing motor nameplate, shaft and mounting arrangement so the specifications can be compared.

• Brand: Techtop
• Series: TAI
• Motor Type: Three Phase Aluminium Electric Motor
• Rated Output: 0.25kW
• Poles: 4 Pole
• Full Load Speed: 1365 RPM
• Frame Size: 71A
• Shaft Diameter: 14mm
• Voltage: 230/415V @ 50Hz
• Full Load Current: 0.75A @ 400V
• Duty Rating: S1 Continuous Duty
• Construction: Aluminium
• Enclosure Type: TEFC
• Protection Rating: IP55
• Insulation Class: Class F with Class B Rise
• Full Load Torque: 1.74Nm
• Efficiency @ 100% Load: 63.0%
• Efficiency @ 75% Load: 61.7%
• Efficiency @ 50% Load: 55.0%
• Power Factor @ 100% Load: 0.76
• Power Factor @ 75% Load: 0.68
• Power Factor @ 50% Load: 0.51
• Noise Level: 58 dB(A) @ 1 metre
• Vibration Limit: 1.8mm/sec
• Bearing Make: NSK
• Bearing Type: Ball / Ball
• Bearing Size: 6202ZZ / 6202ZZ C3
• Motor Mass: 5.0kg
• IEC Standard: IEC 60034 & 72
• Thermal Protection: Available upon request

• 0.25kW Rated Output: Compact power solution for industrial machinery and equipment.
• 4 Pole Performance: Delivers approximately 1365 RPM at full load for general industrial applications.
• 71A Frame: Suitable for machinery and replacement motor applications requiring a TAI 71 frame.
• 14mm Shaft Diameter: Standard shaft configuration for this TAI frame size.
• Aluminium Construction: Durable motor housing while maintaining relatively low motor weight.
• TEFC Construction: Totally Enclosed Fan Cooled design provides dependable cooling and protection during operation.
• IP55 Protection: Suitable for general industrial environments.
• Class F Insulation: Class F insulation with Class B temperature rise provides dependable thermal performance.
• S1 Continuous Duty: Designed for continuous operation at rated load when correctly selected and installed.
• NSK Bearings: Fitted with quality NSK ball bearings for dependable operation.
• Multiple Mounting Options: Available in B3, B5, B14, B34 and B35 mounting configurations.
• Replacement Motor Option: Suitable for replacing compatible three phase motors when power, speed, frame, shaft and mounting specifications match.