Deep Groove Ball Bearing
681XZZmini bearing 1.5x4x2mm stable quality high speed low noise chrome steel samples are available.
Model number:681XZZ / 681X / 681
Size: 1.5x4x1.2mm
Material: Chrome Steel (GCr15) / Stainless Steel (AISI 440C)
weight: 0.0001KG
Specification
The 681 bearing is a miniature deep groove ball bearing designed for compact assemblies where space, rotational accuracy and low friction are important. Its deep raceway structure provides stable radial load support while allowing smooth, high-speed rotation with low operating noise. Within the series, the 681XZZ uses a shielded design to help protect the internal raceway from dust and retain lubrication, while the 681X features a thin-section construction for applications with tighter installation space. Available in GCr15 chrome steel and AISI 440C stainless steel, 681 bearings are widely suited to precision instruments, small motors, micro-transmission systems and other compact mechanical equipment requiring reliable and consistent rotation.
681XZZ, 681X, and 681 are all miniature deep groove ball bearings. The 681XZZ features dust shields, while the 681X is a specialized thin-section design. These 681 bearings offer a compact overall structure, low friction coefficient, and suitability for high-speed operation. Capable of handling radial loads, they are ideal for applications demanding space efficiency and precision, such as precision instruments, small motors, and micro-transmission systems.
| Model Number | 681XZZ / 681X / 681 |
| Size | 1.5x4x1.2mm |
| Weight | 0.0001KG |
| Material | Chrome Steel (GCr15) / Stainless Steel (AISI 440C) |
| Clearance | C2 C0 C3 C4 |
| Precision Grade | p0 |
| Dynamic Load Rating | 32 N |
| Static Load Rating | 12 N |
| Max Speed (Grease Lubrication) | 180,000 RPM |
| Payment | 100% T/T or 30% T/T before production, 70% before delivery |
| Lubrication | Pre-lubricated with High-Performance Grease |
| Temperature Range | -20°C to +120°C |
| Lead Time | 3-5 Days |
681XZZ Mini Bearing Overview
The 681XZZ Mini Bearing is a super-small deep groove ball bearing designed for compact precision devices that demand smooth rotation, low noise, and high-speed performance.
With advanced manufacturing accuracy and durable materials, the 681XZZ bearing is widely used in micro motors, robotics, medical devices, office automation, and instrumentation systems.
Built to ISO standards, RMO’s miniature bearings deliver exceptional consistency, longevity, and performance stability across diverse applications.As a trusted Deep Groove Ball Bearing Manufacturer,RMO ensures every bearing meets strict quality requirements for precision, durability, and smooth operation.
Related Products
| Bearings No. | ID(d*D*B)mm | Weight (KG) | Bearings No. | ID(d*D*B)mm | Weight (KG) |
| 681xzz | 1.5*4*2 | 0.0001 | 6811ZZ | 55*72*9 | 0.081 |
| 681 | 1*3*1 | 0.0001 | 6812ZZ | 60*78*10 | 0.106 |
| 681X | 1.5*4*1.2 | 0.0001 | 6813ZZ | 65*85*10 | 0.13 |
| 682ZZ | 2*5*2.3 | 0.0002 | 6814ZZ | 70*90*10 | 0.14 |
| 682XZZ | 2.5*6*2.6 | 0.0003 | 6815ZZ | 75*95*10 | 0.145 |
| 683 | 3*7*2 | 0.0005 | 6816ZZ | 80*100*10 | 0.154 |
| 684ZZ | 4*9*4 | 0.0015 | 6817ZZ | 85*110*13 | 0.27 |
| 685ZZ | 5*11*5 | 0.002 | 6818ZZ | 90*115*13 | 0.285 |
| 686ZZ | 6*13*3.5 | 0.002 | 6819ZZ | 95*120*13 | 0.3 |
| 687 | 7*14*3.5 | 0.003 | 6820ZZ | 100*125*13 | 0.313 |
| 688ZZ | 8*16*5 | 0.003 | 6821ZZ | 105*130*13 | 0.325 |
| 689ZZ | 9*17*5 | 0.003 | 6822ZZ | 110*140*16 | 0.515 |
| 6800ZZ | 10*19*5 | 0.005 | 6824ZZ | 120*150*16 | 0.56 |
| 6801ZZ | 12*21*5 | 0.006 | 6826ZZ | 110*140*16 | 0.8 |
| 6802ZZ | 15*24*5 | 0.007 | 6828ZZ | 140*175*18 | 0.85 |
| 6803ZZ | 17*26*5 | 0.008 | 6830 | 150*190*20 | 1.16 |
| 6804ZZ | 20*32*7 | 0.019 | 6832 | 160*200*20 | 1.23 |
| 6805ZZ | 25*37*7 | 0.022 | 6834 | 170*215*22 | 1.63 |
| 6806ZZ | 30*42*7 | 0.026 | 6836 | 180*225*22 | 2.03 |
| 6807ZZ | 35*47*7 | 0.029 | 6838 | 190*240*24 | 2.62 |
| 6808ZZ | 40*52*7 | 0.033 | 6840 | 200*250*24 | 2.73 |
| 6809ZZ | 45*58*7 | 0.04 | 6844 | 220*270*24 | 3 |
| 6810ZZ | 50*65*7 | 0.052 | 6848 | 240*300*28 | 4.6 |
Main application
Miniature 681 bearings are suitable for various industrial equipment, small rotary motors, etc. in fields with high rotational speed and low noise, such as office equipment, miniature motors, instruments and meters, laser engraving, small clocks, soft drives, pressure rotors, dental drills, hard disk motors, stepper motors, video tape drums, toy models, computer cooling fans, money-counting machines, fax machines, and other related fields.
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