HK$648

SLR BB30 G3陶瓷珠啤零

兼容性:

安裝 BB30 大餅於 BB30車架.

 

規格:

Grade 3 Si3N4 陶瓷珠啤零

車架BB規格 BB30
車架BB闊度

68/73mm

大餅軸心直徑 30mm
 

 

Check compatibility using below table, please contact us if you are in doubt.

Color may look different from actual bottom bracket

  Frame BB Shell

Crankset (Spindle Diameter)

BB Shell Inner DiameterBB Shell WidthShimano Hollowtech II / RaceFace (24mm)Sram / Truvativ GXP (24/22mm)Sram DUB (29mm)Campagnolo (25mm)BB30 (30mm)BB386Evo (30mm)
BB Type
BSA (ISO)1.37 in x 24 TPI68 / 73 mmBSA-24BSA-2422   BSA-386
ITA36mm70mmITA-24     
BB86 / BB9241mm86.5 / 91.5 mm86-2486-242286-DUB  86-386
BB3042 mm68 / 73 mmBB30-24  BB30-CP (No Bearings)BB30 
PF3046 mm68 / 73 mmPF30-24PF30-2422PF30-DUB PF30PF30-386
BB386Evo46 mm86.5 mm386-24  BB386-CP (No Bearings)  
BBRight™46 mm79 mmBBright-24    BBright-386

Grade 3 balls

Balls are rated by their grade. A Grade 3 ball means that the ball is 3/1,000,000” tolerance of sphericity, and so is extremely round. In fact, the races of any bearing can't come close to this level of precision in their trueness, but every component being closer to perfect helps decrease friction. Another feature of Grade 3 is surface finish, which in this case is free of scratches or scuffs, and to a <0.003 micron fine finish. The lower the grade number, the better is the ball. SLR uses only highest grade ceramic balls.

 

Silicon Nitride Balls

Made from pure Silicon Nitride material (Si3N4) with extreme high density from uniform compaction (3.25 g/cm3), the micro-structural elements of this material is second to none. In other words, it is extremely dense. There are several materials used for ceramic balls and races and SLR only uses the best, Silicon Nitride. Other ceramic materials should not be considered because of their inferior characteristics. The high precision Grade 3, Si3N4 pure ceramic balls are 3/1,000,000” from exactly round in sphericity. 60% lighter weight and 7 times harder than steel, friction is reduced to near zero. Resistance to heat is 8 times greater than that of steel, tougher and less brittle than other ceramic materials. There is simply no comparison for corrosion resistance or magnetic problems with our Si3N4 balls.

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