Futaba S3171SB S3172SV Internal Gear Set compatible with S3171/S3172 - FUEBS3387  [FUEBS3387]

FUTABA S3171SB S3172SV SERVO GEAR SET AS4177 EBS3387
Price:
NZD$42.27
Brand:
Futaba
Model:
FUEBS3387
GTIN:
4513886305443
Condition:
Brand New
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Gear compatibility and service notes for Futaba S3171/S3172

The Futaba FUEBS3387 gear set provides the internal replacement components for servos carrying the S3171SB and S3172SV identifiers. These parts are intended to replace worn gear trains that cause excess slop, audible gear noise, or uneven centring.

This description highlights compatibility checks and concise servicing tips to restore mechanical integrity. It does not replace the manufacturer's repair guidance but suggests practical inspections to confirm correct operation after the gear swap.

Compatibility advice: confirm the servo case markings show S3171SB or S3172SV before ordering. When changing gears, examine spline condition, output shaft wear, and housing cleanliness to prevent premature failure.

Specifications

  • Item Servo gear set
  • Material Manufacturer did not specify
  • Model Number FUEBS3387
  • Compatibility Futaba S3171SB, Futaba S3172SV

Installing the correct Futaba FUEBS3387 gear pack helps return the original mesh and responsiveness, improving longevity and predictable centring for RC servos used in regular maintenance cycles.

How durable are the replacement gears compared with the originals?

Durability depends on load, contamination, and prior wear. The FUEBS3387 pack replaces worn components, but overall longevity will match the original design unless underlying issues like shaft wear or binding are present.

What should I inspect to avoid repeating gear failure?

Check for rough or worn splines, damaged bearing surfaces, bent output shafts, and signs of contamination. Address any root cause before fitting new gears to prevent early wear.

Can I lubricate the new gears to extend life?

Light, appropriate lubricant on gear teeth can reduce friction, but avoid excess grease that can attract debris. Use a lubricant suited for small precision gears.

When is a full servo replacement preferable to gear renewal?

If there is significant shaft wear, bearing failure, or persistent electrical issues, a full servo replacement may be more cost effective than repeated gear changes.

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