Feature

●Structure of bearing model 684zz :Inner & outer ring, cage, steel balls, grease, shield
●Our bearing is pre-lubricated with grease,The main purpose of lubrication is to reduce friction that may cause premature failure.
●Nylon plastic retainers,Use for high speed rotation and low noise levels，The ZZ shield cannot be removed
●Bearing is made of chrome steel material,The typical surface hardness for bearing components made from this material ranges from 60-64 on the Rockwell hardness C scale (Rc).
●Bore Dia (d): 4.000 mm Outer Dia (D): 9.000 mm Width (B): 4.000 mm


Description

Description of the explosion of Powerful Brushless Motors Precision Miniature Ball BearingDescription of the explosion of Powerful Brushless Motors Precision Miniature Ball Bearing
684ZZ Ball Bearing for motor fans684ZZ Ball Bearing for motor fans

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684zz Ball Bearing

4x9x4mm ABEC-5 Quality Bearings [ 10 Pcs ]

Electric Motor Bearings

The purpose of a bearing in an electric motor is to support and locate the rotor, to keep the air gap small and consistent and transfer the loads from the shaft to the motor.

The bearings should be able to operate at low and high speeds whilst minimizing frictional losses.

At the same time, the bearing must be economic and require absolutely minimal maintenance (if any).

  • Noiselessly - Nylon cage, G5 Class Steel Balls, With Grease.
  • Roll Smoothly & Without Backlash - 52100 Chrome Steel.
  • Suitable for Brushless Motors, Propellers, Fans, RC Engines.

684ZZ Bearings no swing684ZZ Bearings no swing

684ZZ Bearing rotation smooth684ZZ Bearing rotation smooth

684ZZ bearing sydd size684ZZ bearing sydd size

Without Backlash

C0 clearance, under the condition of non-laod, the radial swing play is within the 9um range.

Noiselessly

Using ultra-fine grinding technology, the groove is as smooth as a mirror and has little friction.

Fit Perfectly

ABEC-5 , aperture negative tolerance range controlled between 7um, ensuring good fit.

MR52ZZ A5 BEARING 683ZZ A7 BEARING 684ZZ A5 BEARING 693ZZ Motor Bearings
MR52ZZ Motor Bearings 683ZZ Motor Bearings 684ZZ Motor Bearings 693ZZ Motor Bearings
Dimensions: 2x5x2.5mm 3x7x3mm 4x9x4mm 3x8x4mm
Ring Material: 52100 Chrome steel 52100 Chrome steel 52100 Chrome steel 52100 Chrome steel
Ball Material: Chrome steel Chrome steel Chrome steel Chrome steel
Max Speed (Grease) (X1000 RPM): 54 63 58 65
Lubrication: Pre-Grease Pre-Grease Pre-Grease Pre-Grease
Shaft Mount Type: Press Fit Press Fit Press Fit Press Fit
Temperature Range: -20° to 120 ℃ -20° to 120 ℃ -20° to 120 ℃ -20° to 120 ℃
ABEC Rating: ABEC-5 ABEC-7 ABEC-5 ABEC-7
Radial Clearance Trade No.: C0(K25) C0(K25) C0(K25) C0(K25)
Weight (grams): 0.23 0.45 0.96 0.78

Customer Application Case

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I took for replacement in the video card rx480/470 from Sapphire.

In principle, not bad bearings.

Restored several ancient quality coolers. Excellent purchase-you can safely take.

I ordered for Hubsan 501 s, well, what can I say, came quickly no questions, half a day put them in exchange for the old, as it was a crunch and remained, in size, everything came up.

Problem solved after replacing RC engine bearings.

Super bearing, use for Johny fpv 2207-7 2700kv and racerstar air-A 2508 1200kv Motors.

excellent as always in xing motors

Satisfied with the quality, took for eco Emax 2306

Good for repairing Sun/Oracle server fans.

Replaced fan bearing on turbo 1080, works fine.

Ordered for Sapphire Nitro + The fan became as new!

Branding and sales range of FUSHI bearingsBranding and sales range of FUSHI bearings