"When a critical piece of rotating equipment failed, we needed a mixed SKF list urgently. The supplier consolidated the order, shipped same-day, and the parts were on our plant floor in two days. The equipment was back online before the end of the shift."




Buying for several machines? Add this model to one inquiry with the other SKF bearings, housings and accessories on your list. Each line keeps its own designation, quantity and specification.
Send Your Full ListAbout this SKF bearing
Product Specifications
| Parameter | Details |
|---|---|
| Model NO. | Double Row Cylindrical Roller Bearing |
| Outer Dimension | Medium and Large(120-190mm) |
| Material | Bearing Steel |
| Spherical | Non-Aligning Bearings |
| Load Direction | Axial Bearing |
| Separated | Separated |
| Clearance | C0 C2 C3 C4 C5 |
| Cage | Brass, Steel |
| Vibration | Z1V1 Z2V2 Z3V3 |
| Hardness | 60-64 HRC |
| Transport Package | Carton Pallet |
| HS Code | 8482800000 |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Industrial Machinery | Air Compressor |
Looking for Reliable Double Row Cylindrical Roller Bearings NUP311/NUP312 with C3 Clearance for Air Compressors?
Air compressor operators know the frustration of bearing failures—unplanned downtime, costly repairs, and the struggle to find exact replacements. When dealing with critical components like Double Row Cylindrical Roller Bearings, getting the right clearance (C3) and dimensions is non-negotiable. Many suppliers offer limited models, forcing you to compromise on specifications or wait weeks for delivery.
Built for Air Compressor Reliability
Our Double Row Cylindrical Roller Bearing NUP311/NUP312 with C3 Clearance addresses these challenges directly. As a supplier with extensive experience in industrial bearings, we maintain a comprehensive inventory covering major international standards, ensuring you get the exact C3 Clearance Bearing your air compressor requires. The separated design allows for easy installation and maintenance, a critical feature in compressed air systems where downtime must be minimized.
Optimized Performance in Air Compressor Environments
This Air Compressor Bearing thrives in the high-load, moderate-speed conditions typical of air compressors. The C3 clearance provides extra space to accommodate thermal expansion during operation, preventing premature wear and overheating. With a hardness rating of 60-64 HRC, the bearing steel construction delivers exceptional durability, even under the continuous stress of compressed air generation.
Key Engineering Features for Longevity
The NUP311 and NUP312 Cylindrical Roller Bearings incorporate design elements that directly impact performance. The brass or steel cage options ensure stable roller guidance, reducing friction and extending service life. Vibration class options (Z1V1 to Z3V3) allow customization based on your compressor's precision requirements, with higher grades minimizing operational noise and vibration. The separated inner and outer rings facilitate quick replacement, a crucial advantage during maintenance cycles.
Why Proper Bearing Selection Lowers Total Cost
Choosing the right C3 Clearance Double Row Bearing isn't just about avoiding immediate failures—it's about reducing long-term costs. A bearing with incorrect clearance can cause excessive heat buildup, leading to seal degradation and oil breakdown in your air compressor. Our precision-engineered bearings, manufactured to strict quality standards, help prevent these issues, lowering maintenance frequency and extending intervals between overhauls. This focus on reliability translates to lower total cost of ownership compared to cheaper, less precise alternatives.
Quality You Can Rely On
Every bearing undergoes thorough inspection, including dimensional checks and hardness testing, to ensure compliance with industry specifications. We source materials from verified suppliers and maintain a rigorous quality control process throughout production. All bearings come with a standard warranty covering manufacturing defects, providing peace of mind for your critical applications. Our global supply chain ensures consistent availability, so you can secure the NUP311 C3 Air Compressor Bearing or NUP312 C3 Cylindrical Roller Bearing when you need it.
Packaging & Shipping
- Packaged in carton pallets for secure transportation
- Available for immediate shipment from stock
- Flexible shipping options including express, air, and sea freight
- Low minimum order quantity to support both small and large-scale requirements
Request a Quote for NUP311/NUP312 C3 Bearings
Need the Double Row Cylindrical Roller Bearing NUP311/NUP312 with C3 Clearance for your air compressor? Provide us with the specific model, quantity, and delivery location, and we’ll promptly send you a competitive quote. We handle all major bearing brands and models, so even if you need additional components, we can consolidate your order for efficient shipping.
Frequently Asked Questions
Q: Do you support procurement of other bearing brands or models?
A: Yes, we offer comprehensive procurement services covering all major international and domestic bearing brands. Simply provide the required brand, model, or dimensions, and we can source it for you.
Q: How can I confirm if this bearing is compatible with my air compressor?
A: Share your air compressor model or the bearing's dimensional requirements (bore diameter, outer diameter, width), and our technical team will verify compatibility with the NUP311/NUP312 C3 bearings.
Q: What is your warranty policy for these bearings?
A: We provide a warranty against manufacturing defects. The specific duration and terms will be detailed in your order confirmation, with coverage for replacement or refund in case of verified defects.
Q: What is the minimum order quantity for NUP311/NUP312 C3 bearings?
A: We offer low minimum order quantities to accommodate both small maintenance needs and large-scale production requirements. Contact us for specific quantity pricing.
Q: How quickly can you ship the bearings after order placement?
A: Stock items like the NUP311 and NUP312 C3 bearings are shipped within 1-2 business days. Shipping time depends on your location and chosen delivery method.
Q: Do you offer OEM/ODM customization for bearings?
A: Yes, we support custom bearing manufacturing based on your detailed specifications, drawings, or samples. Contact our technical team to discuss your customization requirements.
Ready to order or need a quote?
Send the bearing model, dimensions (d x D x B), and quantity — we'll get back to you with pricing and lead time.
One SKF inquiry. Every line accounted for.
Electrical Equipment is an Authorized SKF Distributor that turns mixed equipment lists into itemised, comparable quotes and consolidated supply for industrial plants, maintenance contractors and distributors worldwide.
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Broad SKF range in one purchase
Ball, roller, needle, thrust, mounted and precision bearings handled in a single industrial order.
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Mixed equipment lists
One inquiry covers parts for different machines, with designations and internal stock codes matched line by line.
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Standard and precision flagged
Routine replacement bearings and special-specification models are labelled separately on your quote.
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No unapproved substitutes
Identification gaps are closed before quoting; any alternative is listed separately for your approval.
Related SKF bearings
These SKF models share the category of Double Row Cylindrical Roller Bearing NUP311/NUP312 C3 Clearance for Air Compressor and can be quoted on the same inquiry.
01 NJ307 Cylindrical Roller Bearing 35x80x21mm P0-P2 Precision for Reducer
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02 Cylindrical Roller Bearing NUP208EM 17x40x16mm P0-P2 Precision for Precision Mechanical Equipment
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03 Cylindrical Roller Bearing NJ206ECP/C3 NJ207ECP/C3 for Farm Machinery Oil Lubrication
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04 Cylindrical Roller Bearings NU234EM for Steel Mills with 100% Original SKF Quality
View detailsWhere this bearing is used
Double Row Cylindrical Roller Bearing NUP311/NUP312 C3 Clearance for Air Compressor is specified in the applications below. Open an application to see the matching SKF bearing categories.
Trusted by plants and maintenance teams
Industrial buyers in the USA, Mexico, Oman, France, New Zealand and Brazil source genuine SKF bearings and mixed lists through Electrical Equipment.
"We had a bad experience with counterfeit SKF bearings from another supplier. The bearings from skfus.com are genuine, traceable, and the packaging matches SKF's current format. Our reliability team verified the first batch and we now use them as our primary source."
"The SKF mounted units and insert bearings we ordered for a conveyor upgrade were supplied with the correct housing and locking arrangement. Our maintenance team installed them without modification. No noise, no leaks, no call-backs."
Technical articles for this bearing type
These guides cover selection, identification and replacement points relevant to Double Row Cylindrical Roller Bearing NUP311/NUP312 C3 Clearance for Air Compressor.
SKF CARB vs Cylindrical Roller: Wholesale Supplier for Non-Locating Positions
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SKF AH 3138 Withdrawal Sleeve Specs: Wholesale Supplier
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Read the guideQuestions about ordering this SKF bearing
Short answers on identification, mixed orders, quote terms and substitutions at Electrical Equipment.
What if my SKF designation is incomplete?
Send a clear photo of the bearing markings and note which details still need confirming. We close identification gaps, including the exact specification and complete assembly, before you accept a quote. Nothing is substituted to fill a gap.
Can I quote this bearing together with other SKF categories?
Yes. Standard, precision and mounted units can sit in one itemised inquiry, with each line keeping its own designation, quantity and specification. Housings and mounting accessories are added when they are part of your supply scope.
What does the written quote include?
Each quote lists the designation, quantity, price and currency, stock availability, estimated lead time and quote validity. Applicable freight or tax terms are stated, and the product documents available for your order are confirmed.
How are substitutions confirmed?
Only with your approval. Any alternative is marked separately on the quote, and every technical change needs sign-off from the buyer before an order is placed.
Get a written quote for Double Row Cylindrical Roller Bearing NUP311/NUP312 C3 Clearance for Air Compressor
Send this model alone or with your full SKF list. We verify the identification details on every line first, then issue an itemised written quote with lead time and validity.