21BRCX-335-J39

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The 21BRCX-335-J39 is a heavy-duty resolver with a 2.1-inch outer diameter and a steel housing of 1.35 inches in length. Manufactured by Danaher as part of the Dynapar Resolvers series, it operates up to 200°C and features a 335 single servo groove housing. The resolver weighs approximately 200 g.

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Product Description:

The 21BRCX-335-J39 is a CX-510 type Resolver that Danaher made to help with precise motion control in systems for industrial automation. The frame size of the resolver is 2.1 inches, and it is made for the rotor's primary function.

The 21BRCX-335-J39 resolver's single servo groove body is 1.35 inches long and composed of steel. The pilot diameter is 2.061 inches, which is the same as most mounting connections. This hole is 0.5 inches wide, and this length is 1.25 inches long. A voltage of 4 Vrms and a frequency of 7 kHz are sufficient to make the resolution functional. The resolver requires 30 mA of power to operate, and its force ratio is 0.5. The amount of phase change is 0.25. Zro's resolver resistance is 150+J140 ohm, while Zso's is 300+J400 ohm. The stator contains 39 ohms, while the rotor contains 33 ohms. The null voltage sensitivity is 25 mm/V, which is appropriate for the level of accuracy desired. The resolver contains 24 AWG wiring lines that are 12 inches long and phase in a counterclockwise manner.

The resolver has a velocity error mark and a positional error noted in Rx-Pk arc-min that show that the alignment is very precise. The speed of the resolution is 3. The 21BRCX-335-J39 resolver weighs 9.4 ounces, which means it can support small setups without putting any mechanical stress on them. The general design and performance parameters of the resolver make it suitable for use in automated control systems. The necessary conditions are satisfied for the consistent input of position and the conversion of rotational signals. Even after numerous duty cycles, the electrical properties of the resolver remain constant. The resolver facilitates system stability and precision-targeted motion.

Excitation Frequency
7 kHz
Frame Outer Diameter
2.1 in
Frame Size
21
Housing Length
1.35 in
Housing Material
Steel
Housing Type
335 Single Servo Groove
Input Current
50 mA rms
Null Voltage
20 mV rms
Operating Temperature
up to 200°C
Phase Direction
Clockwise (CW)
Pilot Diameter
2.061 in
Positional Error
39 arc‑min
Weight
200 g

Frequently Asked Questions about 21BRCX-335-J39:

Q: Why does 21BRCX-335-J39 use 7 kHz input?

A: It ensures optimal excitation frequency for stable performance. This improves signal resolution and accuracy in feedback-controlled systems.

Q: How does 21BRCX-335-J39 benefit from steel housing?

A: Steel housing offers mechanical rigidity and durability. It maintains structural integrity under extended operational cycles and vibration conditions.

Q: Why does 21BRCX-335-J39 include tubing and shielding?

A: Tubing and shielding reduce electromagnetic interference. This ensures clean signal transmission in electrically noisy environments.

Q: Does 21BRCX-335-J39 have rotor primary operation?

A: Yes, it is configured for rotor primary. This setup supports precise signal output aligned with rotor position.

Q: Do 21BRCX-335-J39 leads support signal integrity?

A: Yes, the 24 AWG leads with 12-inch length maintain consistent electrical conductivity. This minimizes signal loss during operation.


Internal Product Review

  • ‘‘The 21BRCX-335-J39 resolver ensures reliable signal feedback with a 0.5-inch bore and 1.25-inch length. Developed by Danaher, it includes tubing, shielding, and CCW phasing. The unit operates at 7 kHz with 4 Vrms input. It is built with a 9.4 oz weight configuration.’’

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