Dimensions: 4*16*5mm
Weight: 0.006kg/pc
Number of Row: Single row
Structure: Radial ball bearing
Material: Chrome steel or carbon steel
Internal Play: CN or C0 normal clearance
Sealing Solution: Rubber seal on both sides
Package: Industrial package or individual package
Cross Reference: 634-2RS, 634 2RS, 634 RS, 634rs, 634-RS, 634EE, 634DD, etc
634-2RS bearing is miniature ball bearing.
For this bearing,
Dimensions: 4*16*5mm
Weight: 0.006kg/pc
Type: Radial ball bearing
Material: Chrome steel or carbon steel
Internal Play: CN or C0 normal clearance
Sealing Solution: Rubber seal on both sides
Package: Industrial package or individual package
Cross Reference: 634-2RS, 634 2RS, 634 RS, 634rs, 634-RS, 634EE, etc
Applications: Wheels, toys, home appliance, dental machinery, etc
| Model Number | d (mm) | D (mm) | B (mm) | |
| Open | ZZ type | |||
| 681 | 1 | 3 | 1 | |
| 691 | 4 | 1.6 | ||
| 681XZZ | 1.5 | 4 | 1.2 | 2 |
| 691XZZ | 5 | 2 | 2.6 | |
| 601XZZ | 6 | 2.5 | 3 | |
| 682ZZ | 2 | 5 | 1.5 | 2.3 |
| MR52ZZ | 5 | 2 | 2.5 | |
| 692ZZ | 6 | 2.3 | 3 | |
| MR62ZZ | 6 | 2.5 | 2.5 | |
| MR72ZZ | 7 | 2.8 | 3 | |
| 602ZZ | 7 | 2.8 | 3.5 | |
| 682XZZ | 2.5 | 6 | 1.8 | 2.6 |
| 692XZZ | 7 | 2.5 | 3.5 | |
| MR82X | 8 | 2.5 | ||
| 602XZZ | 8 | 2.8 | 4 | |
| MR63ZZ | 3 | 6 | 2 | 2.5 |
| 683ZZ | 7 | 2 | 3 | |
| MR83ZZ | 8 | 2.5 | 3 | |
| 693ZZ | 8 | 3 | 4 | |
| MR93ZZ | 9 | 2.5 | 4 | |
| 603ZZ | 9 | 3 | 5 | |
| 623ZZ | 10 | 4 | 4 | |
| 633ZZ | 13 | 5 | 5 | |
| MR74ZZ | 4 | 7 | 2 | 2.5 |
| MR84ZZ | 8 | 2 | 3 | |
| 684ZZ | 9 | 2.5 | 4 | |
| MR104ZZ | 10 | 3 | 4 | |
| 694ZZ | 11 | 4 | 4 | |
| 604ZZ | 12 | 4 | 4 | |
| 624ZZ | 13 | 5 | 5 | |
| 634ZZ | 16 | 5 | 5 | |
| MR85ZZ | 5 | 8 | 2 | 2.5 |
| MR95ZZ | 9 | 2.5 | 3 | |
| MR105ZZ | 10 | 3 | 4 | |
| MR115ZZ | 11 | 4 | ||
| 685ZZ | 11 | 3 | 5 | |
| 695ZZ | 13 | 4 | 4 | |
| 605ZZ | 14 | 5 | 5 | |
| 625ZZ | 16 | 5 | 5 | |
| 635ZZ | 19 | 6 | 6 | |
| MR106ZZ | 6 | 10 | 2.5 | 3 |
| MR126ZZ | 12 | 3 | 4 | |
| 686ZZ | 13 | 3.5 | 5 | |
| 696ZZ | 15 | 5 | 5 | |
| 606ZZ | 17 | 6 | 6 | |
| 626ZZ | 19 | 6 | 6 | |
| 636ZZ | 22 | 7 | 7 | |
1. Large stock for 634-2RS miniature bearings
2. Fast delivery, 1-3 days for small amount
3. Reliable bearing quality
4. OEM and ODM service for 4x16x5mm bearings
5. ISO9001:2015 certificate
6. Prompt reply
Comparison helps when dimensional fit is only part of the decision and load direction, sealing, clearance, speed, temperature, or repeat-order stability still need to be confirmed. Reviewing one or two nearby options early usually reduces sourcing mistakes later.
Buyers normally confirm the part reference, main dimensions, application, speed range, operating environment, sealing needs, and any packaging or marking requirements. That gives the supplier a cleaner basis for confirming availability and suitable alternatives.
A quick review of Deep Groove Ball Bearings, one more commercial destination, and one practical guide usually saves time. That combination helps separate simple replacement orders from jobs that still need fit or application review.
Because it makes later decisions faster. When sizing notes, application cues, and nearby options stay close to the product, engineering, purchasing, and maintenance teams can revisit the same logic without starting the review from zero.
1. Sea shipping for mass cargos (GW > 500KGS)
2. Air shipping (GW between 100KGS – 500 KGS)
3. Express, such as DHL, TNT, Fedex, UPS for small cargos ( GW < 100KGS)
4. If you have shipping agent in China, we can send goods to your shipping agent's warehouse
We accept T/T, W/U, PAYPAL, L/C etc
Buyer FAQ
Confirm the bearing number, bore size, outside diameter, width, seal or shield type, cage material, clearance, precision level, quantity, and application. These details help prevent a size match from becoming a performance mismatch.
Yes. Replacement and repeat orders are easier when the original marking, measured dimensions, photos, application, and quantity are available. If the marking is unclear, the team can start from the size and working condition.
This item is handled within the Deep Groove Ball Bearings family. Comparing the family page can help buyers review similar sizes, seal options, load direction, and related bearing choices before requesting a quote.
Price and lead time can change with quantity, stock availability, precision grade, clearance, material, cage, seal or shield type, lubrication, packaging, and whether the order needs standard matching or custom production.
Inspection can include material review, dimensional measurement, noise and vibration checks, surface and crack checks, visual review, and packaging inspection according to the confirmed order requirements.
Need help checking fit, price, or lead time? Request a bearing quote
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