6903RS Bearing 6903ZZ Sealed Radial Ball Bearings 17*30*7
Inner (d): 17mm
Outer (D): 30mm
Width (B): 7mm
Weight: 0.017kg
Material: 52100 steel
Radial Static Load Rating C0r (N): 2560
Radial Dynamic Load Rating Cr (N): 4590
6903RS Bearing Specification:
6903RS bearing is sealed deep groove ball bearing.
For this bearing,
Inner (d): 17mm
Outer (D): 30mm
Width (B): 7mm
Weight: 0.017kg
Material: 52100 chrome steel
Cage: steel cage
Radial Static Load Rating C0r (N): 2560
Radial Dynamic Load Rating Cr (N): 4590
Seal: double shielded, 2RS or ZZ
Working Temperature: -30°C to 120 °C
Interchange Numbers: 6903RS, 6903 2RS, 6903-RS, 6903-2RS, 61903RS, 61903 2RS, 61903-RS, 61903-2RS, 6903Z, 6903ZZ, 6903 2Z, 6903-Z, 6903-ZZ, 6903-2Z, 61903Z, 61903ZZ, 61903 2Z, 61903-Z, 61903-ZZ, 61903-2Z, etc.
61900 Series Ball Bearings Size Chart:
| Model Number | Specifications(dxDxB) | Weight/kg |
| 61900 | 10x22x6 | 0.01 |
| 61901 | 12x24x6 | 0.013 |
| 61902 | 15x28x7 | 0.018 |
| 61903 | 17x30x7 | 0.02 |
| 61904 | 20x37x9 | 0.036 |
| 61905 | 25x42x9 | 0.042 |
| 61906 | 30x47x9 | 0.051 |
| 61907 | 35x55x10 | 0.08 |
| 61908 | 40x62x12 | 0.12 |
| 61909 | 45x68x12 | 0.14 |
| 61910 | 50x72x12 | 0.14 |
| 61911 | 55x80x13 | 0.19 |
| 61912 | 60x85x13 | 0.2 |
| 61913 | 65x90x13 | 0.22 |
| 61914 | 70x100x16 | 0.35 |
| 61915 | 75x105x16 | 0.37 |
| 61916 | 80x110x16 | 0.4 |
| 61917 | 85x120x18 | 0.55 |
| 61918 | 90x125x18 | 0.65 |
Questions that help when 6903RS and 6903ZZ is on the shortlist
When is 6903RS and 6903ZZ worth comparing against nearby deep groove ball bearings options?
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.
What details usually matter before approving 6903RS and 6903ZZ for repeat supply?
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.
Which next step usually helps after 6903RS and 6903ZZ is shortlisted?
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.
Why keep a supporting guide linked beside 6903RS and 6903ZZ?
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.
Shipping Method:
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
Payment Terms:
We accept T/T, W/U, PAYPAL, L/C etc
Buyer FAQ
Questions buyers ask before choosing the next bearing option
What should I confirm before ordering 6903RS Bearing 6903ZZ Sealed Radial Ball Bearings 17*30*7?
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.
Can this bearing be matched for replacement or repeat supply?
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.
Which product family does this bearing belong to?
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.
What affects price and lead time for this bearing?
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.
How is this bearing checked before delivery?
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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