SR3640-293-16-48B

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The SR3640-293-16-48B is a versatile motor with a NEMA 42 frame size and standard round mounting configuration. Manufactured by Kollmorgen, it belongs to the SR and SRF Permanent Magnet Motors. This motor delivers up to 2700 oz-in holding torque and operates at temperatures as low as -40°C.

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Product Description:

This SR3640-293-16-48B DC Motor is engineered for durability and efficiency. This model is constructed with a robust metal housing. This motor is coated with a corrosion resistant blue finish that ensures long term reliability even in demanding environments.

The SR3640-293-16-48B DC motor features a precision machined shaft with a keyway for secure coupling measured at 0.6748 inches in diameter. This shaft design provides optimal torque transmission. This motor is compact yet powerful with an overall length of approximately 11 inches. The mounting base of this motor includes pre drilled slotted holes that allows for flexible installation and enhanced stability on various surfaces. This motor also features a dual end shaft configuration for multiple mechanical setups. The motor is equipped high quality copper windings and carbon brush system. It offers a well designed commutator that ensures efficient electrical conductivity and minimal wear. The rear end terminals of this motor is used for straightforward electrical connections including polarity markings for proper DC input. This model is designed to operate with clockwise (CW) rotation. The sturdy end caps are secured with heavy duty bolts. It is ideal for use in conveyor systems, pumps, automation equipment and other heavy duty machinery.

This Kollmorgen SR3640-293-16-48B DC motor operates at a speed of 1800 RPM that delivers stable and controlled motion. It has a voltage rating of 90 VDC to provide consistent power for various applications. The rated current of 3.2 A ensures energy efficiency while maintaining optimal performance. This SR series permanent magnet DC motor is capable of handling moderate load requirements with a rated power of 1/3 HP. This motor's design supports smooth operation and reduces noise and during use.

Conduit Connection (L Configuration)
1/2 NPSC tap with insulating bushing
Conduit Connection (M Configuration)
PG 13.5 tap (no bushing)
Connector Option
MS connector with encoder
Encoder Output
Dual‑channel quadrature with index (Z)
Frame Size
NEMA 42
Front Shaft Diameter (41H, 42H)
0.6250 in (15.875 mm)
Front Shaft Diameter (43H)
0.7500 in (19.05 mm)
Holding Torque per Phase
up to 2700 oz‑in (19.1 Nm)
Max Core Diameter
2.186 ± 0.002 in (55.52 ± 0.05 mm)
Max Length (Model 41H)
5.61 in (142.5 mm)
Max Length (Model 42H)
8.04 in (204.2 mm)
Max Length (Model 43H)
10.56 in (268.2 mm)
Max Operating Temperature (Encoder)
–40 to 100 °C

Frequently Asked Questions about SR3640-293-16-48B:

Q: How does the shaft design of the SR3640-293-16-48B DC Motor enhance torque transmission?

A: The precision-machined shaft has a keyway for secure coupling. This design ensures optimal torque transmission and enhances stability during high-load operations. The 0.6748-inch shaft diameter supports efficient mechanical engagement.

Q: What makes the Kollmorgen SR3640-293-16-48B DC Motor reliable in harsh environments?

A: The corrosion-resistant blue finish protects against environmental wear. The heavy-duty metal housing enhances durability and ensures long-term reliability.

Q: How does the SR3640-293-16-48B DC Motor ensure stable electrical performance?

A: The high-quality copper windings and carbon brush system provide efficient electrical conductivity. The well-designed commutator minimizes wear and extends operational lifespan.

Q: What ensures the SR3640-293-16-48B DC Motor operates efficiently with minimal noise?

A: The balanced motor design reduces operational vibrations. The sturdy end caps secured with heavy-duty bolts provide structural stability. These elements contribute to smooth, low-noise operation in industrial settings.

Q: How does the SR3640-293-16-48B DC Motor facilitate flexible installation?

A: The pre-drilled slotted holes on the mounting base allow for easy positioning on different surfaces. The dual-end shaft configuration supports multiple mechanical setups.


Internal Product Review

  • ‘‘The Kollmorgen SR3640-293-16-48B DC Motor ensures high performance with its precision-machined shaft and keyway for secure torque transmission. Its high-quality copper windings enhance electrical efficiency, while the heavy-duty metal housing offers durability. The rated power of 1/3 HP supports moderate load applications. ’’

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