Four Row Tapered Roller Bearings

RKB FRTRB Design Types:

1. TQO Type

• Constructed with three ribless outer rings, including one double cup and two single cups, with two cup spacers (plain or featuring lubrication grooves and holes).
• Contains two inner rings with three ribs, with a double cone design and one cone spacer.
• Equipped with four one-piece window-type steel cages.
• Designed to carry radial and axial loads in both directions, with optional helical groove in the bore (G) for enhanced lubrication.
• Clearly marked zones on the cups side face for simplified mounting and maintenance.
• Available in both metric and inch sizes.

2. TQO NO SPACER/G Type

• Includes three ribless outer rings, two single cups, and one double cup, without spacers.
• Contains two inner rings with a three-rib design for enhanced stability and durability.
• Equipped with four one-piece, window-type pressed steel cages.
• Supports bidirectional radial and axial loads.
• Marked zones on cups side face for easier handling.
• Lubrication grooves on the double cone side faces to improve lubrication and performance.

3. TQO PIERCED/G Type

• Composed of three ribless outer rings, two cup spacers, and two inner rings with three ribs, along with a cone spacer for enhanced load capacity.
• Pierced roller design optimizes load capacity and performance under demanding conditions.
• Includes lubrication grooves and holes for effective heat dissipation.
• Available with helical groove in the bore (G) to assist in lubrication.

4. TQOS/AVS2/G Type

• Includes three ribless outer rings, two cup spacers, and two inner rings with a three-rib design.
• Designed with lateral flanges featuring lip seals and o-rings for improved sealing and longevity.
• Equipped with the Anti-Vortex System (AVS) cone spacer seal set.
• Available with marked zones on the cups for quick and easy installation.

5. TQIT Type

• Built with two ribless outer rings and one cup spacer, available in cylindrical (TQI) or tapered bore (TQIT) options.
• Composed of three inner rings with side ribs and four one-piece, window-type steel cages.
• Optional helical groove in the bore (G) and marked zones on cups for straightforward mounting.
• Available in both metric and inch sizes.

Why Choose RKB Tapered Roller Bearings?

• Wide Range of Options: RKB offers a comprehensive portfolio of TRBs that can be customized in metric or inch series, suited for heavy-duty applications.
• Quality Materials & Precision Manufacturing: Made with high-hardness materials and advanced heat treatments, RKB bearings deliver high fatigue strength and wear resistance.
• Custom Engineering Support: RKB provides tailored technical support to guide customers in selecting the right bearing for their specific applications.
• Built for Industrial Strength: RKB TRBs are ideal for rolling mill applications and other heavy-duty sectors requiring durable and reliable bearing solutions.

For inquiries or to learn more about RKB Tapered Roller Bearings, contact us today.