Rotary Deck Bushings

DTH Deck Bushings

North Star DTH Deck Bushings. Static, non-rotating DTH deck bushings with replaceable wear sleeves. Check dimensions and the required drilling configuration.

This static design has no moving parts and uses replaceable wear sleeves. It is primarily intended for lower-speed DTH applications. The existing product guidance does not recommend it for rotary drilling. Confirm the worn sleeve and outer-body dimensions before replacement.

Inquiry Now
Download

DTH Deck Bushings: A Serviceable Static Design

A static deck bushing is a non-rotating bushing with no moving parts. Its outer body is designed to accept replaceable wear sleeves, allowing the inner wear component to be changed when worn.
01 / DESIGN

Static, non-rotating

No moving parts in the bushing design.
02 / MAINTENANCE

Replaceable wear sleeves

Interchange the wear sleeve when its inner diameter reaches the end of its useful life.
03 / APPLICATION

DTH-focused application

Primarily intended for DTH drilling, where rotation speeds are much lower than in rotary drilling.

Where this bushing belongs

DTH DRILLING

Recommended application

DTH (down-the-hole) drilling applications with comparatively low rotation speeds.
ROTARY DRILLING

Not recommended

Do not select this static deck bushing for rotary drilling applications.
Application selection should be confirmed against the drill rig, drill pipe diameter, operating conditions and the manufacturer’s specifications.

How the replaceable sleeve works

NORTH STAR / DTH

01 — Outer body

The static outer body holds the interchangeable wear sleeve.
NORTH STAR / DTH

02 — Wear sleeve

The sleeve provides the inner-diameter wear surface.
NORTH STAR / DTH

03 — Replacement

When the sleeve inner diameter is worn beyond its useful life, replace the sleeve rather than treating it as a moving assembly.

Technical details to confirm

The supplied product description does not specify dimensions, compatible rig models, part numbers, materials or tolerances. Confirm these items before ordering.
NORTH STAR / DTH

Fit & dimensions

Drill pipe outside diameter, required bushing inner diameter, outer-body dimensions and mounting interface.
NORTH STAR / DTH

Wear sleeve

Sleeve size, replacement availability and wear-limit criteria.
NORTH STAR / DTH

Operating conditions

DTH rig compatibility, rotational speed and relevant operating requirements.

Common questions

NORTH STAR / DTH

Is a static deck bushing suitable for rotary drilling?

No. The supplied product description specifically states that this static, non-rotating design is not recommended for rotary drilling applications.
NORTH STAR / DTH

Does the bushing contain moving parts?

No. It is described as a static, non-rotating bushing with no moving parts.
NORTH STAR / DTH

What can be replaced after wear?

The wear sleeve can be interchanged when its inner diameter has worn beyond its useful life.
NORTH STAR / DTH

Why is it primarily used for DTH drilling?

DTH applications typically operate at much lower rotation speeds than rotary drilling applications, as noted in the supplied description.

Find the right DTH deck bushing

Share your drill rig model, drill pipe size and application requirements so our team can help confirm a suitable configuration.

Send an Inquiry

DTH Deck Bushings Selection Guide

North Star DTH Deck Bushings. Static, non-rotating DTH deck bushings with replaceable wear sleeves. Check dimensions and the required drilling configuration.

Configuration and Application

This static design has no moving parts and uses replaceable wear sleeves. It is primarily intended for lower-speed DTH applications. The existing product guidance does not recommend it for rotary drilling. Confirm the worn sleeve and outer-body dimensions before replacement.

DTH Deck Bushing Requirements

When selecting dth deck bushing, provide the intended application, existing assembly details and the dimensions needed for the mating components. Include drawings, photographs or an existing part reference when available. Confirm the finished configuration with the quotation before ordering.

Related Tooling and Technical Background

Review Down the Hole (DTH) Drill Rods and DTH Adaptors for related North Star tooling. For general background on DTH drilling, see the DTH drilling reference. Product-specific dimensions and compatibility remain subject to the selected configuration.

Request DTH Deck Bushings

Send the required configuration, quantity and drawings for a quotation. Identify the connections and dimensions that must match the existing equipment. Our team can review the supplied information and confirm the applicable options.

Related products

Getting quotes

Our technical engineers will reply within 12 hours