Catalog Searcher
Categories

SP/DTR-T Slewing Bearing (Circumferentially Split Type, External Teeth)

SP/DTR-T形 / JTEKT Corporation (Official website)

Circumferentially split slewing bearing with external teeth, inner diameter 2020 to 6457 mm. Available in 2-split and 4-split types, designed to improve assembly of large machines.

Last verified: (date the content was verified against the source document)

Specifications

Inner diameter d 2020〜6457 mm
Basic static load rating C0a 47200〜394000 kN
Mass 8700〜45800 kg
Gear Pressure Angle 20 °

How to choose Slewing Ring Bearings

Points to check when selecting, with the values for this product (SP/DTR-T Slewing Bearing (Circumferentially Split Type, External Teeth)).

  1. 1. Select a structure that suits load and moment

    Single-row ball type is compact and suited to general construction machinery and cranes; three-row combined cylindrical roller type offers high rigidity and rated load for large cranes and tunnel boring machines; double-row tapered roller type can carry high axial load thanks to its large contact angle. Select the type based on the magnitude of moment load and impact.

  2. 2. Allow margin in static rated load

    This product: Basic static load rating C0a 47200〜394000 kN

    Because slewing bearings often operate at low speed or oscillate, the basic static rated load in the axial direction, C0a, is the primary selection criterion. Listed products range widely from 341 to 394000 kN. Convert maximum load and moment to equivalent load, and compare products with a safety factor appropriate to the application.

  3. 3. Match mounting diameter and support structure dimensions

    This product: Inner diameter d 2020〜6457 mm

    Bore diameter d and outside diameter D determine the mounting surface on the support structure or rotating body, the bolt hole layout, and the space for piping and cables passing through the center. Listed bore diameters range from a few mm to 6457 mm. For large-diameter products, a split design makes transport and assembly easier.

  4. 4. Confirm gear position and specifications

    This product: Gear Pressure Angle 20 °

    Whether to choose ungeared, internal-tooth or external-tooth types depends on the layout of the drive pinion. Listed products have a pressure angle of 20°. Match the tooth profile (standard or low-profile teeth) and the JIS gear accuracy grade with the pinion side, and consider surface and root induction hardening as required.

  5. 5. Select sealing and lubrication method for the operating environment

    In environments exposed to soil or water pressure, some products offer pressure-resistant seals with a static withstand pressure of 0.3 MPa in addition to labyrinth and dust seals. Check the presence of grease nipples and drain ports, and whether grease feeding, oil bath or forced circulation lubrication is used, in line with the maintenance plan.

  6. 6. Estimate handling and installation method from mass

    This product: Mass 8700〜45800 kg

    Listed products vary widely in mass, from 1 to 45800 kg. Large units are constrained by lifting equipment, crane capacity and transport dimensions, so verify the mass and, if necessary, consider circumferentially split designs (two-piece or four-piece).

This guide was written by AI based on the listed products' documents and specification items.

About Slewing Ring Bearings and all products

Description

Large externally toothed slewing bearing that can be split in the circumferential direction. Intended for tunnel boring machines, and the split structure supports on-site assembly.

Features

  • Circumferentially split type
  • Available in 2-split and 4-split types
  • With external gear teeth

Applications

  • Tunnel boring machines
  • Large industrial machinery

FAQ

Q. What is the inner diameter range of the SP/DTR-T Slewing Bearing (Circumferentially Split Type, External Teeth)?
A. Inner diameter d is 2020 to 6457 mm.
Q. Is the SP/DTR-T Slewing Bearing available in split types?
A. Yes, it is available in 2-split and 4-split types and has a structure that can be split in the circumferential direction.
Q. What applications is the SP/DTR-T Slewing Bearing used for?
A. It is intended for tunnel boring machines and large industrial machinery. For tunnel boring machines, the split structure supports on-site assembly.
Q. What are the basic static load rating C0a and mass of the SP/DTR-T Slewing Bearing?
A. Basic static load rating C0a is 47200 to 394000 kN, and mass is 8700 to 45800 kg.
Q. What is the gear pressure angle and gear type of the SP/DTR-T Slewing Bearing?
A. The gear pressure angle is 20 °, and it has external gear teeth.

Written by AI based on the content of the source documents.

Source documents

Similar products (other manufacturers)

Slewing Ring Bearings products, ordered by similarity of specifications and applications.

More products from JTEKT Corporation

See all →