30TM11N Bearing 30TM11NC3-UR Ball Bearing 30x75x21mm
d: 30 mm
D: 75 mm
B: 21 mm
Mass: 0.415kg
Seal: rubber seal on 2 sides
Precision: standard ABEC1, P0
Internal Play: standard C0, CN
Structure: deep groove ball bearing
External Modification: grooved outer ring
30TM11N Bearing Specification:
30TM11N bearing is designed as a deep groove ball bearing.
As for the bearing designation,
d: 30 mm
D: 75 mm
B: 21 mm
Mass: 0.415kg
Material: chrome steel
Seal: rubber seal on 2 sides
Precision: standard ABEC1, P0
Internal Play: standard C0, CN
Working Temperature: -30°C to 120 °C
External Modification: grooved outer ring
Replacements: 30TM11, 30TM11N C3, 30TM11NC3-UR
Maintenance Tips For 30TM11N C3 Bearings:
1. Storage & Handling
Keep 30TM11NC3-UR bearings in original, sealed packaging until just before installation.
Store horizontally in a clean, dry, vibration‑free area (avoid vibration to prevent false brinelling).
Handle with clean, dry, gloved hands; never wash in unapproved solvents unless re‑lubrication is planned.
2. Cleanliness Control
Target assembly area cleanliness: ISO 4406 ≤ 18/16/13 (or as clean as practicable).
Do not unwrap near grinding, welding, or abrasive dust sources.
3. Inspection Before Mounting
Visually check 30TM11N bearing raceways, cage, and seals/shields for nicks, discoloration (overheat), or corrosion.
Gently rotate; it should feel smooth, with no grit or catches.
Confirm correct internal clearance class (Normal, C3, etc.) matches design requirement.
4. 30TM11N Bearing Mounting Practices
Use correct fits: typically interference on the rotating ring (e.g., shaft fit k5/m5) and a slip or light interference in the stationary housing; confirm with load direction and thermal conditions.
Apply force ONLY to the ring being fitted (press on inner ring for shaft mounting; press on outer ring for housing). Avoid transmitting press load through the balls.
For tighter fits, use controlled induction heating (e.g., 80–110°C; never exceed manufacturer’s maximum, often ~120°C) with temperature probe and even heating.
5. Cleaning In Service
Generally avoid washing bearings in place. If necessary, purge with small amounts of fresh compatible grease while slowly rotating to expel contaminants.
Questions that help when 30TM11N and 30TM11NC3-UR is on the shortlist
When is 30TM11N and 30TM11NC3-UR 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 30TM11N and 30TM11NC3-UR 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 30TM11N and 30TM11NC3-UR 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 30TM11N and 30TM11NC3-UR?
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 30TM11N Bearing 30TM11NC3-UR Ball Bearing 30x75x21mm?
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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