NTN 4T-30306CA tapered roller bearing
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Tapered roller bearings
We reply promptly.
Tell us the quantity you need and request a quote by WhatsApp or email.
Can't find the exact model? Tell us the part number or model you need. We'll track it down and quote it, whether or not it appears in our catalog.
Description
NTN 4T-30306CA belongs to tapered roller bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 4T-30306CA and any equivalents.
When a shaft carries radial and axial forces at the same time, a tapered roller bearing is often the practical answer. NTN offers this family in a range of sizes, and MR Industrial Accessories LLC supplies it to maintenance and purchasing teams. The examples below, 4T-30304CA and 4T-30306CA, show how the designation is built and what to check before mounting.
Reading the code is the first step. The 4T- prefix places the part in the tapered roller series. The five digits that follow, 30304 or 30306, set the size and dimension series. The CA ending points to a particular internal variant, typically tied to the contact angle or the cage arrangement. Once you recognize these blocks, matching a bearing to an application becomes faster.
Typical duties include gearboxes, speed reducers, wheel axles, railway equipment, mills, presses and general industrial transmissions. The reason is the same in every case: the bearing handles combined loading, which suits shafts that see radial and axial stress simultaneously, such as vehicle wheels or machine tool spindles.
Selection should cover the mounting arrangement, whether the bearings are mounted in pairs, face-to-face or matched, along with the sealing option, open, oil seal or shield plate. Internal clearance and lubrication also belong in the decision. Shaft-to-housing alignment matters, since misalignment introduces parasitic loads and shortens service life. On matched mountings, set the axial clearance to the manufacturer's specification.
Interchange is possible with other recognized brands when bore, outer diameter and width, plus tolerances, line up. Dimension series are largely standardized, which simplifies cross-referencing. If you only have another brand's code or an unidentified part, send it over and we can point to the compatible option.
Dimensions
Dimensions and tolerances: Message us the part number on WhatsApp and we'll verify its dimensions and version with the manufacturer's datasheet.
Frequently asked questions
- What does the CA suffix indicate on these NTN bearings?
- It marks a specific construction variant, generally related to the contact angle or the internal cage design. Share the complete code and we will confirm what it means for your application.
- Should I use an open or a sealed bearing?
- It depends on the working environment. Open bearings support lubrication and heat dissipation, while sealed versions keep contaminants out. Dust, moisture and how often maintenance is performed all play a role, and we can advise based on your equipment.
- Can an NTN bearing replace one from another brand?
- Yes, provided the main dimensions and tolerances match. Standardized dimension series make interchange straightforward. Give us the original brand code and we will identify the corresponding NTN equivalent.