GK2586 Series – Through Bore Slip Rings
The GK2586 is a through-bore slip ring: the shaft passes straight through the hollow centre, so cables can be routed down the bore and the unit mounts rigidly on the rotating shaft. This model provides 25.4 mm bore, 86 mm OD, 6/12/18/24/36 circuits, 440 V, available in IP51, IP65 and IP68 versions and rated −30 to +80 °C.
Typical applications: rotary tables, packaging and filling machinery, cable reels and winches, wind turbine nacelles, and industrial test stands where continuous rotation is required.
Selection notes: current per ring depends on bore size — 5 A or 10 A at 12.7 mm and up to 20 A per ring from 25.4 mm upward. Above 15 A on a small bore, parallel rings are the practical solution. Life expectancy for this family is offered in three tiers: 20, 50 and 80 million revolutions.
GUREN machines, assembles and dielectric-tests through-bore slip rings in-house, including a full insulation test on every unit before shipment.
Custom circuit counts, lead lengths, connector types and mounting flanges are quoted on request, and in-house machining keeps lead times short for both standard and modified units.
Bore-size guide: see all 25.4 mm bore slip rings, including selection notes and current limits for this size.
Specifications — GK2586
| Parameter | Value |
|---|---|
| Bore (inner diameter) | 25.4 mm |
| Outer diameter | 86 mm |
| Circuits | 6 / 12 / 18 / 24 / 36 |
| Current per ring | 5 A / 10 A / 20 A |
| Rated voltage | 0–440 VDC/VAC |
| Dielectric strength | 800VAC@50Hz 60s (power) / 300VAC@50Hz 60s (signal) |
| Insulation resistance | ≥ 1000Mohm/500VDC (power) / ≥ 1000Mohm/300VDC (signal) |
| Dynamic contact resistance | < 10 mΩ |
| Operating temperature | -30 ° °C ~ +80 °C |
| Protection | IP51 standard; IP65 / IP68 available |
| Lead wire | AF200-17AWG Teflon, default length 300mm (adjustable) |
| Length by circuit count | 44.8 mm (6 ckt) / 67.6 mm (12 ckt) / 90.4 mm (18 ckt) / 113.2 mm (24 ckt) / 158.8 mm (36 ckt) |
| Life / speed (grade D1 / D2 / D3) | 20 M rev @ 250 rpm · 50 M rev @ 800 rpm · 80 M rev @ 1200 rpm |
Figures above are from the current datasheet for this series. Custom bore, circuit count, lead length and flange are quoted per drawing.
Frequently asked questions — GK2586
What are the bore and outer diameter of the GK2586?
The GK2586 has a 25.4 mm bore (inner diameter) and a 86 mm outer diameter.
How many circuits and how much current per ring?
Standard circuit counts are 6 / 12 / 18 / 24 / 36. Each ring can carry 5 A / 10 A / 20 A, depending on the grade and wiring option.
Which ingress protection classes are available?
IP51 is standard. IP65 and IP68 versions are available on request for washdown, outdoor and high-humidity service.
What life expectancy can I expect?
Three grades are offered: D1 at 20 million revolutions (250 rpm), D2 at 50 million revolutions (800 rpm) and D3 at 80 million revolutions (1200 rpm). The grade is selected at order.
