Product Specifications
| Parameter |
Details |
| Model NO. |
Nj309m |
| Outer Dimension |
35mm-400mm |
| Material |
Bearing Steel |
| Spherical |
Non-Aligning Bearings |
| Load Direction |
Radial Bearing |
| Separated |
Separated |
| Product Name |
Cylindrical Roller Bearing |
| Structure |
Cylindrical |
| Seals Type |
Open |
| Lubricate |
Oil Grease Dry |
| Precision Rating |
P0 P6 P5 P4 P2 |
| Number of Row |
Single Row |
| Service |
OEM ODM |
| Transport Package |
Carton Pallet |
| Specification |
45*100*25mm |
| Origin |
China |
| HS Code |
8482500090 |
| Production Capacity |
100000 |
Application Industries
| Industry |
Typical Equipment |
| Automotive |
Auto Transmissions |
| Industrial Machinery |
Gearboxes, Machine Tools |
| Power Transmission |
Reduction Drives, Conveyors |
Prevent Transmission Failures with NJ309M NU310M Cylindrical Roller Bearings
Auto transmission manufacturers know the cost of bearing failure—unplanned downtime, warranty claims, and reputational damage. Sourcing bearings that balance precision, durability, and delivery speed remains a constant challenge, especially when dealing with custom specifications or tight production schedules.
Engineered for Auto Transmission Performance
Our Cylindrical Roller Bearings, including NJ309M and NU310M models, are designed to address these pain points. Crafted from high-grade GCr15 bearing steel and available in P0-P4 precision classes, these bearings deliver reliable radial load support critical for transmission gears. With separated inner and outer rings, they allow easy installation and maintenance—key for assembly line efficiency.
Optimized for Demanding Transmission Environments
Auto transmissions operate under extreme conditions: continuous radial loads, variable speeds, and temperature fluctuations. Our cylindrical roller bearings excel here, with open design facilitating lubrication management and single-row structure ensuring compact fit in transmission housings. The non-aligning design maintains stability under shaft deflection, reducing premature wear in high-torque applications.
Precision Parameters That Matter
Three technical features define these bearings' performance: Precision rating (P0-P4) controls dimensional accuracy—P4 grade minimizes runout for smooth gear meshing. Separated construction allows independent mounting of inner and outer rings, simplifying transmission assembly. GCr15 steel composition ensures hardness (HRC 58-62) and fatigue resistance, extending service life under cyclic loads. These attributes directly translate to fewer transmission failures and lower maintenance costs.
Why Compromise on Bearing Quality?
Choosing substandard cylindrical roller bearings may reduce upfront costs, but the hidden expenses add up. Early fatigue failure can damage gears and shafts, leading to $1,000+ repair bills per transmission. Our bearings, produced in an ISO9001-certified facility with full QC lab testing, meet strict auto industry standards—delivering consistent performance that lowers total cost of ownership over time.
Your Reliable Bearing Partner Since 2005
We've served global automotive clients for 18 years, with a track record of stable supply across Europe, America, and Southeast Asia. Our R&D team develops custom solutions for unique transmission requirements, while our flexible order system supports 1pc MOQ for standard items—perfect for prototyping or emergency repairs. Every bearing comes with a 12-month warranty, and our technical team provides free guidance on installation and lubrication.
Packaging & Shipping
- Secure carton and pallet packaging to prevent damage during transit
- 3-5 days sample lead time for prototype testing
- 5-15 days bulk delivery via T/T, credit card, or Alibaba trade terms
- Global logistics options including air and sea freight
- 1pc MOQ available for standard cylindrical roller bearings
Get Your Transmission Bearings Today
Don't let bearing issues slow your production. Send us your transmission model, required precision grade, and quantity—our team will confirm specifications and provide a quote within 24 hours. With free samples available (buyer covers freight), you can validate performance before full production.
Frequently Asked Questions
Q: Are these bearings suitable for high-temperature transmission applications?
A: Yes, our GCr15 cylindrical roller bearings operate effectively in typical automotive transmission temperature ranges. Contact our technical team for specific heat resistance requirements.
Q: Can you customize bearing dimensions for non-standard transmissions?
A: We offer full OEM/ODM customization. Provide your technical drawings or sample, and our engineering team will develop a solution.
Q: What warranty coverage do you provide?
A: All bearings come with a 12-month global warranty. Defective products will be replaced or refunded at no cost.
Q: What is the minimum order quantity for custom bearings?
A: Custom orders require MOQ negotiation based on specifications. Standard models like NJ309M are available with 1pc MOQ.
Q: How do you ensure bearing quality?
A: Our ISO9001 & ISO14001 certified production includes raw material inspection, in-process testing, and final QC before shipment.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we'll respond within 24 hours.
