The NJ316ECJ is a single-row cylindrical roller bearing in the NJ configuration, commonly specified with a 80 mm bore, 170 mm outside diameter, and 39 mm width. Its roller-and-raceway design is suited to applications with substantial radial loads, while the NJ arrangement can also support axial load in one direction under appropriate operating conditions. Before ordering, confirm the exact dimensions, internal design, cage, clearances, and load ratings against the selected manufacturer’s current catalog, because suffix meanings and specifications can vary.
If you want to learn more, please visit our website.
This guide is for engineers, maintenance teams, and procurement professionals evaluating an NJ316ECJ for replacement or a new design. It helps buyers check the basic size, understand the NJ configuration, and prepare the technical information needed for a reliable quotation. It does not replace a manufacturer’s catalog or an application-specific bearing calculation.
A cylindrical roller bearing uses rollers running between raceways on its inner and outer rings. The rollers provide line contact with the raceways, which is why this bearing family is commonly selected for radial-load applications. The exact load capacity and operating limits depend on the bearing’s internal geometry, materials, manufacturing specification, and installation conditions.
In an NJ arrangement, the outer ring has two integral flanges and the inner ring has one. This geometry can guide the shaft axially in one direction and support axial load in that direction, subject to the bearing’s rated limits and operating conditions. If the design needs axial location in both directions, the complete arrangement may require another bearing or a different configuration.
Suffixes identify design details such as internal construction, cage type, or clearance, but they are not universally consistent between manufacturers. For that reason, do not infer the exact cage material or internal design from “ECJ” alone. Ask the supplier for the manufacturer-specific designation key and technical drawing, particularly when replacing a bearing from a different brand.
The following are the commonly listed nominal boundary dimensions for NJ316ECJ. Treat them as a preliminary identification check rather than a complete specification: operating speed, load ratings, clearance, tolerances, and permissible temperature must be confirmed from the relevant product catalog. If a bearing is being replaced, compare the complete designation and mounting arrangement, not only the three dimensions.
| Specification | Common nominal value | Buyer check |
|---|---|---|
| Bore diameter (d) | 80 mm | Confirm shaft seat size and required fit. |
| Outside diameter (D) | 170 mm | Check housing bore and available installation clearance. |
| Width (B) | 39 mm | Verify shoulder positions and axial space. |
| Bearing type | Single-row cylindrical roller bearing, NJ configuration | Confirm axial guidance direction and arrangement requirements. |
| Suffix | ECJ | Verify its precise meaning in the selected manufacturer’s catalog. |
These boundary dimensions are useful for screening compatibility, but they do not establish interchangeability by themselves. Two bearings with the same bore, outside diameter, and width may differ in internal clearance, cage construction, load ratings, precision, or other details. Obtain the actual product data before approving a substitute.
NJ316ECJ may be considered for machinery that needs strong radial-load support and axial guidance in one direction. Potential applications include industrial gearboxes, electric motors, pumps, and other rotating equipment, provided that the operating speed, load, lubrication, and mounting conditions fall within the manufacturer’s limits. For automotive-related supply or equipment, evaluate the bearing against the actual assembly requirements rather than assuming that a general bearing designation guarantees suitability for a specific vehicle or position.
Standard bearing steel is common in cylindrical roller bearings, but the exact steel, heat treatment, cage, and surface details should be confirmed for the offered product. Application conditions may call for different cage designs, internal clearances, or special execution, subject to manufacturer availability. For contaminated, high-temperature, high-speed, or frequent-start-stop environments, share the conditions with the supplier before selecting a standard configuration.
With competitive price and timely delivery, Tuoda Bearing sincerely hope to be your supplier and partner.
Start by separating radial and axial loads and identifying when each occurs. The NJ configuration offers axial guidance in one direction, so confirm that this matches the shaft’s locating strategy and the direction of thrust. If thrust can reverse or requires support in both directions, review the whole bearing arrangement with an engineer or manufacturer.
Provide the shaft and housing dimensions, fit requirements, expected operating temperature, speed, and lubrication method. Fits and thermal conditions can affect internal clearance during operation, so a default clearance should not be selected without checking the application. Also describe vibration, shock loads, contamination, and duty cycle where relevant.
When replacing an existing bearing, record the full marking, manufacturer, and any suffixes visible on the bearing or packaging. Compare the catalog dimensions and technical features, then confirm whether the proposed alternative matches the required cage, clearance, precision, and load capacity. Request a drawing or specification sheet when the application has close tolerances or downtime risk.
For a quotation, send the required quantity, destination, target delivery window, packaging needs, and any documentation requirements. Minimum order quantity and lead time depend on stock status, production planning, destination, and the exact specification, so request confirmation rather than relying on a general estimate. If you need recurring supply, discuss forecast quantities and acceptable approved alternatives in advance.
A capable supplier should be able to clarify the offered manufacturer and designation, confirm the boundary dimensions, and provide applicable product documentation. Ask how the supplier handles specification matching, packaging, traceability information, and changes to the quoted product. Where an application is critical, request written confirmation of the agreed configuration before placing the order.
Tuoda Bearing supports B2B buyers sourcing cylindrical roller bearings by reviewing the requested designation and application details before quotation. Share the full NJ316ECJ marking, quantity, delivery destination, and any drawing or operating requirements so we can check the requested configuration and discuss available supply options. We can also help identify which technical details still need confirmation, without treating a dimensional match as proof of full interchangeability.
The NJ316ECJ is commonly specified with 80 mm bore, 170 mm outside diameter, and 39 mm width, and its NJ design is intended for radial-load support with axial guidance in one direction. Whether it is suitable for your application depends on verified manufacturer data and the complete operating arrangement, including load direction, speed, fits, clearance, and lubrication. Before purchasing, confirm the full suffix definition and compare the offered specification with the original bearing requirements.
To request a quotation from Tuoda Bearing, provide the bearing marking, required quantity, application details, and delivery location. If you are considering a replacement or cross-brand alternative, include the existing manufacturer and any available drawing so we can review the specification with you. This gives your engineering and procurement teams a clearer basis for confirming fit, supply terms, and next steps.
For more NJ316ECJ Cylindrical Roller Bearinginformation, please contact us. We will provide professional answers.