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Through Bore Slip Ring

What is through Bore Slip Ring ?

Through-hole slip ring, also known as through-hole slip ring or hollow shaft slip ring, is a device used to transmit power, signals and data in rotating motion. Its central hole design enables the device to achieve stable transmission of information and energy from the fixed part to the rotating part while continuously rotating. This design solves the limitations of traditional slip rings due to cable winding and provides an ideal solution for applications that require unlimited continuous rotation.

DHK Through Bore Slip Ring

DHK Series--Through Bore Slip Ring

DHK series through hole slip ring is specially designed with a central hole for easy installation of hydraulic channel, air pressure channel or drive shaft. It adopts advanced beam brush type multi-point contact to ensure reliable contact under extremely low friction. The through hole ranges from 3mm to 500mm. Optional, the current can be selected from 2 Amperes to 1000 Amperes, which can fully meet your different transmission schemes.

DHK Through Bore Slip Ring Main Features

  1. Transmit analog and data signals
  2. Compatible with data bus protocol
  3. Long life, maintenance-free
  4. Easy to install
  5. 360° continuous rotation to transmit power and data signals

Can Be Customized Specifications

  1. Inner diameter, outer diameter, length
  2. Rotating speed
  3. Circuits(Also named Channel/Wire quantity)
  4. Current and voltage
  5. Wire length, connector type
  6. Housing material and color
  7. Protection level
  8. Signal and power transmitted separately or mixed

Typical application

  1. Industrial machining center, rotary table
  2. Heavy equipment tower or cable reel, laboratory equipment
  3. Packing equipment, stackers, magnetic clutches, process control equipment
  4. Rotation sensors, emergency lighting equipment, robots
  5. Exhibit/display equipment, medical equipment
  6. Hotel, guesthouse revolving door control system
  7. Wind power, Crane, Defense, Radar etc.

Naming Description of Model

Naming description of model

 

 

  1. (1)Product type: DH—electric slip ring
  2. (2)Installation method: K—through hole
  3. (3)Through hole product bore diameter
  4. (4)Total circuits
  5. (5)The rated current or it will not be marked if it passes through a different rated current for the circuits.
  6. (6) Identify number: --XXX; In order to distinguish different specifications of the same product model, the identification number is added after the name. For example: DHK040-40 has two sets of products with the same name, the cable length, connector, installation method, etc. are different, you can add the identification number: DHK040-40-002; if there are more of this model in the future, and so on -003 , -004, etc.

 

 

Product Parameter Selection Table

Model Picture ID(mm) OD(mm) Length of Total Circuit Max Rings PDF
6 rings 12 rings 18 rings 24 rings 30 rings 36 rings 42 rings 42 rings
DHK012-Ⅰ   12.7 53 27.4-36.4 39.4-51.4 51.4-55 63.4-68.2  pdf60
DHK012-Ⅱ   12.7 60 27.4-36.4 39.4-57.4 51.4-69.4 63.4-87.4 75.4-81.4 87.4-94.6 99.4 111.4  pdf60
DHK025   25.4 78 33.4-42.4 45.4-63.4 57.4-84.4 69.4-105.4 81.4-87.4 93.4-100.6 105.4-113.8 117.4-127  pdf60
DHK038   38 99 33.4-42.4 45.4-63.4 57.4-84.4 69.4-105.4 81.4-87.4 93.4-100.6 105.4-113.8 117.4-127  pdf60
DHK050   50 120 42.4-54.4 54.4-78.4 66.4-102.4 78.4-126.4 90.4-135.4 102.4-156.4 114.4-122.8 126.4-136 72 rings  pdf60
DHK060   60 130 43.4-55.4 55.4-79.4 67.4-103.4 79.4-127.4 91.4-151.4 103.4-175.4 115.4-178.4 127.4-199.4 108 rings  pdf60
DHK070   70 145 51-63 63-87 75-111 87-135 99-159 111-183 123-207 135-231 120 rings  pdf60
DHK080   80 155 51-63 63-87 75-111 87-135 99-159 111-183 123-207 135-231 120 rings  pdf60
DHK090   90 165 51-63 63-87 75-111 87-135 99-159 111-183 123-207 135-231 120 rings  pdf60
DHK100   100 185 59-71 71-95 83-119 95-143 107-167 119-191 131-215 143-239 120 rings  pdf60

 

 

DHK Through Bore Slip Ring Installation Manual

Stop plate

Anti-rotation plate installation

1.Install the slip ring at the required position and tighten the matching screws radially, and at the same time ensure that the rotor center is coaxial with the rotation axis.

2.Arrange the wires and make the necessary connections to prevent the wires from obstructing the free rotation of the slip ring, and not to press the wires to cause the wires to bend, otherwise an accident may be caused by the damage of the wire insulation.
3.Use cylindrical pins or bolts to clamp in the U-shaped groove of the stop piece.

Flange installation

1. Locate the outlet of the slip ring to the be installed equipment right position, and lock it with washers and screws.
2. Arrange the wires and make the necessary connections to prevent the wires from obstructing the free rotation of the slip ring.
3. The other end is fixed with positioning block or stop piece
Warning: Because there may be a mechanical fit error between the slip ring and the customer's specific application, it is not recommended to fasten and install the stator and rotor at both ends of the slip ring at the same time, otherwise the slip ring may be damaged prematurely due to poor concentricity.

DHK Through Bore Slip Ring Parameters Table

Through Bore Slip Ring Parameter Table
Technical Parameters
Number of Channels According to customer requirements
Operating Speed 0-1000rpm
Operating Temperature -40-+65℃
Working humidity 0-95%
Electrical Parameters Mechanical Parameters
  Power Signal Contact material Precious metal
Insulation strength ≥1000VAC@50Hz ≥500VAC@50Hz Wire specification Customized
Insulation resistance ≥1000ΜΩ@500VDC ≥500ΜΩ@500VDC Wire length Customized
Rated voltage 0-24VDC ,250VAC/VDC, 440VAC Shell material Aluminum alloy
Rated current 2A,5A,10A,15A,25A Torque 1mN.m/Ring
Dynamic resistance fluctuation value ＜10mΩ Protection level IP51-IP68

DHK Series Wire Selection Specification Table

 Wire Specification Table
Rated current  Wire size
  (AWG)		 Conductor size
    (mm²)		 Wire color Note wire diameter
≤2A AWG26# 0.15 Red, yellow, black, blue, green, white,
brown, gray, orange, purple, light, red, transparent		 Φ1
3A AWG24# 0.2 Red, yellow, black, blue, green, white, brown, gray, orange, purple, light, red, transparent, blue white, white red Φ1.3
5A AWG22# 0.35 Red, yellow, black, blue, green, white, brown, gray, orange, purple, light, red, transparent, blue white, white red Φ1.3
6A AWG20# 0.5 Red, yellow Φ1.4
8A AWG18# 0.75 Red, yellow, black, brown, green, white, blue, gray, orange, purple Φ1.6
10A AWG16# 1.5 Red, yellow, black, brown, green, white Φ2.0
15A AWG14# 2.00  Red, yellow, black, brown, green, white Φ2.3
20A AWG14# 2.5 Red, yellow, black, brown, green, white Φ2.3
25A AWG12# 3.00  Red, yellow, black, blue Φ3.2
30A AWG10# 6.00  Red Φ4.2
＞30A Use multiple AWG12# or multiple AWG10# wires in parallel
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