Brand: Koyo (JTEKT)

Country of Origin: Japan

Item Number: 30312DJR Koyo (JTEKT)

Product Type: Tapered Roller Bearing – Single Row

Category: Tapered Roller Bearing

Dimensions:
Inner Diameter (d): 60 mm (2.3622 in)
Outer Diameter (D): 130 mm (5.1181 in)
Width (B): 33.5 mm (1.3189 in)

Weight:
1.999 kg

Precision Class:
Standard Precision

Design:
Single Row Tapered Roller Bearing

Product Description:
The Koyo 30312DJR is a single-row tapered roller bearing designed to support combined radial and axial loads. The tapered rollers and raceways provide excellent load distribution, allowing the bearing to handle heavy loads while maintaining smooth and reliable operation.

This bearing consists of two separable components: the cone assembly (inner ring with rollers and cage) and the cup (outer ring). The separable design simplifies installation, inspection, and maintenance.

Single-row tapered roller bearings are typically installed in paired configurations to support axial loads in both directions. They can be arranged in back-to-back (O arrangement), face-to-face (X arrangement), or tandem configurations, depending on the application requirements.

Manufactured by Koyo (JTEKT) in Japan, this bearing offers high durability, precision, and long service life in demanding industrial and mechanical environments.

Key Features:
• Premium Koyo (JTEKT) tapered roller bearing manufactured in Japan
• Designed to support combined radial and axial loads
• Separable cup and cone design for easier installation and maintenance
• High load capacity and reliable performance
• Suitable for paired bearing arrangements
• Durable construction for demanding industrial applications

Suffix Explanation:
D – Steep contact angle (approx. 24°–32°) for increased axial load capacity
JR – Tapered roller bearing conforming to ISO R355 metric series

Typical Applications:
Gearboxes, industrial machinery, automotive transmissions, heavy equipment, and other applications requiring high load capacity and precise shaft support.

PACKAGE INCLUDES: ONE (1) KOYO Bearing 30312 DJR