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  • Miniature Bearing
Miniature Bearing

Miniature Bearing

BCHH Miniature Bearings exemplify precision engineering on a micro scale, drawing upon our 20+ years of

 specialized manufacturing experience and ISO 9001 certified quality systems. These ultra-compact deep 

groove ball bearings are produced with tolerances as tight as ABEC 7/P6, utilizing high-purity chrome steel, 

stainless steel, or ceramic materials. Despite their small size - with bore diameters from 1mm - they 

maintain exceptional rotational accuracy, low noise, and reliable performance in high-speed applications, 

making them ideal for the most demanding precision instruments and compact mechanisms.


Applications:

Precision medical devices and dental handpieces

Small DC motors and micro-motors

Robotics and drone propulsion systems

Optical instruments and encoders

Computer disk drives and office automation equipment

Aerospace instrumentation and guidance systems


Power your precision applications with BCHH Miniature Bearings. Contact our engineering team today for 

technical specifications and custom solutions. Request samples to verify performance in your compact 

designs.

Get Product Catalog Send inquiry WhatsApp
InquiryBearing Number Principal dimensionsBasic load ratingsSpeed ratings Weight
openshieldedsealeddDBB1r(min)dynamic(Cr)static(Cor)greaseoilOpenshielded
605 605ZZ 5 14 5 5 0.2 1330 505 40000 50000 3.54 3.48
625 625ZZ 2RS 5 16 5 5 0.3 1730 670 36000 43000 4.95 4.86
635 635ZZ 2RS 5 19 6 6 0.3 2340 885 32000 40000 8.56 8.34
MR106 MR106ZZ 6 10 2.5 3 0.15 495 218 45000 53000 0.56 0.68
MR126 MR126ZZ 6 12 3 4 0.2 715 292 43000 50000 1.27 1.74
686 686ZZ - 6 13 3.5 5 0.15 1080 440 40000 50000 1.91 2.69
696 696ZZ 2RS 6 15 5 5 0.2 1730 670 40000 45000 3.88 3.72
606 606ZZ 2RS 6 17 6 6 0.3 2260 835 32000 40000 8.15 7.94
626 626ZZ 2RS 6 19 6 6 0.3 2340 885 32000 40000 8.15 7.94
636 636ZZ 6 22 7 7 0.3 3300 1370 30000 36000 14 14
7 11 2.5 3 201 43000 50000 0.72
MR137 MR137ZZ 7 13 3 4 0.2 540 276 40000 48000 1.58 2.02
687 687ZZ 7 14 3.5 5 0.15 2RS 1170 510 40000 45000 2.13 2.97
697 697ZZ 7 17 5 5 0.3 1610 710 36000 43000 5.26 5.12
607 607ZZ 2RS 7 19 6 6 0.3 2RS 2340 885 36000 43000 7.67 7.51
627 627ZZ 2RS 7 22 7 7 0.3 2RS 3300 1370 30000 36000 12.7 12.9
637 637ZZ 2RS 7 26 9 9 0.3 2RS 4050 1620 28000 34000 24 25
7
MR128 MR128ZZ 8 12 2.5 3.5 0.15 545 275 40000 48000 0.71 0.97
MR148 MR148ZZ 8 14 3.5 4 0.2 820 385 38000 45000 1.86 2.16
688 688ZZ 2RS 8 16 4 5 0.2 2RS 1260 590 36000 43000 3.25 4
698 698ZZ 2RS 8 19 6 6 0.3 2RS 2240 910 36000 43000 7.23 7.18
608 608ZZ 2RS 8 22 7 7 0.3 2RS 3300 1370 34000 40000 12.1 12.2
628 628ZZ 2RS 8 24 8 8 0.3 2RS 3350 1430 28000 34000 17.2 17.4
638 638ZZ 8 28 9 9 0.3 4550 1970 28000 34000 28.3 28.6
8
689 689ZZ 2RS 9 17 4 5 0.2 2RS 1330 665 36000 43000 3.53 4.43
699 699ZZ 9 20 6 6 0.3 - 1720 840 34000 40000 8.45 8.33
609 609ZZ 2RS 9 24 7 7 0.3 2RS 3350 1430 32000 38000 14.5 14.7
629 629ZZ 2RS 9 26 8 8 0.3 2RS 4550 1970 28000 34000 19.5 19.3
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