Slip rings and rotary joints manufactured in Jiujiang, China since 2014
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DHK260-25 Low Temp Application Through Bore Slip Ring 25channels hole diameter 260mm — through bore slip rings manufactured by INGIANT
Through Bore Slip Rings

DHK260-25 Low Temp Application Through Bore Slip Ring 25channels hole diameter 260mm

This is a through bore unit with a 260 mm bore, carrying 25 circuits across a continuously rotating joint. Power and signals cross the joint through sliding precious metal contacts, so the moving assembly can turn indefinitely in either direction.

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DHK260-25 Low Temp Application Through Bore Slip Ring 25channels hole diameter 260mm — through bore slip rings manufactured by INGIANT
DHK260-25 Low Temp Application Through Bore Slip Ring 25channels hole diameter 260mm, view 2
DHK260-25 Low Temp Application Through Bore Slip Ring 25channels hole diameter 260mm, view 3
Product Overview

DHK260-25 at a Glance

This is a through bore unit with a 260 mm bore, carrying 25 circuits across a continuously rotating joint. Power and signals cross the joint through sliding precious metal contacts, so the moving assembly can turn indefinitely in either direction.

  • Ø260 mm
  • -40℃~ 80℃
Key Benefits

What This Model Gives the Machine

Unlimited rotation without cable wind-up

The rotating side keeps its electrical connection through continuous 360° turning, so the machine never has to stop and unwind.

Maintenance-free contact system

Precious metal contact pairs are designed to run without lubrication or servicing for the rated life, so there is nothing to schedule on this axis.

Fits a 260 mm interface

The 260 mm bore lets the shaft, cable bundle or air line pass straight through the axis, so the surrounding design does not have to change.

Stable transmission under vibration

The contact geometry is designed so that shock and vibration do not translate into resistance variation on the signal rings.

Backed by a 12 month warranty

12 months from date of sale; free repair or replacement for quality problems not caused by human damage

Who It Is For

Engineers Who Specify This Part

Designers of rotary tables, index drives, cable reels, packaging and filling machines, harbour and construction cranes, robot joints and pan-tilt heads.

Application scenarios

Problems It Solves

Three Failures It Removes

Failure 1

Rotation limited to ±180° forces an unwind move into every cycle, and that time is lost on every part the machine makes.

Failure 2

A rotating joint that is not sealed for its environment lets dust or wash water reach the contact surfaces, and the symptom looks like an electrical fault.

Failure 3

Adding one more circuit late in a project means a new ring stack, which is why circuit headroom is worth specifying at the start.

Technical Features

Materials Contacts and Construction

Housing

Aluminum Alloy, engineering plastic, stainless steel, etc Torque 0.02N.m;+0.01N.m/ 6rings housing, machined in-house on a CNC centre.

Insulation

Insulation resistance 1000 MΩ / 500VDC Lead Length 300mm (per required).

Operating environment

Working temperature -40℃~ 80℃.

Specifications

Full Parameter Table

Values published for this model. Anything in this table can be changed on a customised build.

Model codeDHK260-25
Bore diameter260 mm
Product familyThrough Bore Slip Rings
ManufacturerJiuJiang Ingiant Technology Co., Ltd, Jiujiang, Jiangxi, China
Standard lead time7–15 days
Warranty12 months from date of sale
Rated voltage0~600VDC/VAC Max speed 15000RPM
Working temperature-40℃~ 80℃
Insulation resistance1000 MΩ / 500VDC Lead Length 300mm (per required)
Housing materialAluminum Alloy, engineering plastic, stainless steel, etc Torque 0.02N.m;+0.01N.m/ 6rings
Manufacturing and Quality Control

How the Unit Is Built and Checked

Machining runs on the in-house CNC centre across roughly 6000 m² of research and production space, and assembly is done by the production team in Jiujiang.

Before despatch each unit is checked for insulation resistance, insulation strength, dynamic resistance variation and functional signal performance, using the test equipment and procedures held under the ISO 9001 and GJB9001C quality systems.

Certifications

  • ISO 9001
  • GJB9001C
  • GB/T 19001-2008 / ISO 9001:2008
Customization Options

What Can Be Changed on This Build

  • Circuit count, and the current and voltage rating of each ring
  • Bore diameter, overall length and mounting interface
  • Added channels — Ethernet, USB, HD-SDI, optical fibre, RF coaxial, pneumatic or hydraulic passages
  • Sealing grade from IP51 to IP68, and housing material
  • Lead length, lead specification, connector termination and outlet direction
  • Quality grade S Standard, I Industrial or P Premium against the revolutions expected

Simple customisation 10–20 days. Complex customisation 15–40 days.

Comparison

How It Compares With the Other Formats

A capsule unit is smaller but leaves nothing free at the centre of the axis. Choose the through bore format when a shaft, a cable bundle, an air line or a fibre has to pass straight through the joint.

Use Guide

Fitting and Commissioning

Mount the stator, not the load

Fix the stator to the frame through the flange or the anti-rotation arm and couple the rotor to the rotating part. The slip ring must never be used as a bearing — the machine's own bearing carries the load.

Respect the lead route

Leave a service loop at both ends and keep the bend radius above the cable's own minimum. Most field failures start at a lead that was pulled straight.

Separate power and signal runs

Route the power leads and the signal leads apart from each other after they leave the unit, and ground the shield at one end only.

Commission at low speed

Turn the assembly by hand first, check continuity on every circuit, then run up to speed and confirm the signal quality before the machine goes into production.

Products

Related Models

Other models in the same family and nearby sizes.

Knowledge

Related Reading

FAQ

About DHK260-25

How many circuits does DHK260-25 have?

This build has 25 circuits, rated 0~600VDC/VAC Max speed 15000RPM. The ring count can be changed on a customised build — send the number of single wires that have to cross the joint.

What does the 260 mm in the model number refer to?

It is the bore diameter. In DHK260-25 the digits after the series letters give that dimension in millimetres, and the number after the dash is the circuit count.

How long does delivery take?

Standard products ship in 7–15 days. Simple customised products take 10–20 days and complex customised products take 15–40 days. The delivery port is Jiujiang, China Mainland.

Can this model be modified for my machine?

Yes. Send the rotating speed, the installation type and size, the circuit count, the voltage and current per ring, the signal types and their parameters, the operating temperature and the IP requirement, and the unit is redesigned around them.

Get a Price and Lead Time for DHK260-25

Tell us the application and the quantity. A standard unit ships in 7–15 days; a modified build comes back with a drawing first.

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