Hirobo HI2521124 Collar 12 x 15.9 x 6.8mm Precision Spacer  [HI2521124]

HIROBO 2521-124 COLLAR 12 X 15.9 X 6.8 #2521124
Price:
CAD$7.67
Brand:
Hirobo
Model:
HI2521124
GTIN:
4512895142308
Condition:
Brand New
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Shaft spacer collar for RC helicopters

This RC collar is listed as HI2521124 by Hirobo and measures 12 x 15.9 x 6.8mm, supplied to match shafts and bearing housings in helicopter assemblies.

It acts as an axial spacer and positional locator inside rotor heads and transmission stacks, helping keep components concentric and limiting axial play when installed correctly.

Installation notes: slide the collar onto the shaft, confirm it seats against adjacent components, inspect for wear or ovality before reuse, and secure it following the original assembly practice to preserve alignment.

How do I fit the collar to a shaft?

Align the collar with the shaft, slide it on until it seats against the stop, and then secure the surrounding components as per the model's assembly routine to maintain concentricity.

What checks should I make after fitting?

Verify the collar sits flush with mating parts, rotate the assembly to check for axial play, and inspect for any misalignment or binding before completing the build.

Are any special tools required to install this part?

Typically no special tools are needed; use the model's standard assembly tools and a visual inspection to ensure proper seating.

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