Through-bore slip rings
Moog AC4598 (AC6419 sealed) through-bore slip ring
Inch-and-a-half bore industrial slip ring rated 10 A at 600 VAC in 6 to 24 circuit builds. The AC6419 is the IP65-sealed version; Ethernet options exist.
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Key specifications
| Circuits (max) | 24 |
|---|---|
| Current per circuit (max) | 10 A |
| Voltage (max) | 600 V |
| Speed (max) | 250 rpm |
| Bore | 38.1–38.1 mm |
| Outer diameter | 100–100 mm |
| Ingress protection | IP65 (AC6419 version) |
| Temperature | -40–80 °C |
| Data / bus | Ethernet |
Summarised in our own words from Moog Inc.'s published data; series maxima, individual models vary. Last checked 2026-10-29. Source 1 · Source 2 · Source 3 · Source 4
Notes on this data
Web page states "250 rpm or higher".
Specify Motion is not affiliated with Moog Inc.. Moog and AC4598 (AC6419 sealed) are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
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Our experienced engineers are on hand, ready to help with your project. Whether you need the Moog AC4598 (AC6419 sealed) itself, help sourcing it, or a modified or custom design built around your load, speed and space, tell us what the machine has to do and we'll come back with the right option.
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Moog AC4598 (AC6419 sealed) model codes
Published model codes in the AC4598 (AC6419 sealed) range. Search this page for your part number, or send it to us for availability or an equivalent.
| Model code | Description | Pricing / replacement |
|---|---|---|
| AC4598 | Quote or replacement for AC4598 → | |
| AC6419 | Sealed version | Quote or replacement for AC6419 → |
Typical applications
What a through-bore slip ring is
A through-bore slip ring is a rotary electrical joint built around a hollow centre, so a drive shaft, pneumatic or hydraulic line, fibre or cable bundle can pass straight through it. The rings are mounted on an insulated sleeve that fits over or around the machine shaft, and the brush blocks sit outside them in a stationary housing. Power, signal and data circuits are combined in one unit, while the bore keeps the rotation axis available for mechanics or services. Bore sizes range from a few millimetres to hundreds of millimetres.
When engineers choose a through-bore slip ring
Engineers choose a through-bore design when the axis of rotation is already occupied, typically by a shaft, a rotary union or a cable that must stay continuous. It is the standard choice for indexing tables, wrapping machines and turntables built around a central column. The trade-off is that larger rings mean higher surface speed, more brush wear and more drag torque at the same rpm, and the unit is bigger than a capsule. Where axial length is the constraint rather than diameter, a pancake design may suit better.
How to specify the Moog AC4598 (AC6419 sealed)
Send these with your enquiry and an engineer can confirm the right AC4598 (AC6419 sealed) variant or an equivalent:
- Bore diameter and shaft tolerance (mm)
- Outer diameter and length limits (mm)
- Circuit count and current per circuit (A)
- Working voltage and any high-voltage isolation (V)
- Speed, continuous and peak (rpm)
- Data or bus protocols to pass, such as Ethernet, CAN or PROFINET
- Sealing (IP code), temperature (°C) and mounting method
Common mistakes to avoid
- Sizing the bore to the shaft only, with no allowance for a rotary union or cables that must also pass
- Mounting the rotor hard on a shaft with radial runout and a separate stator fixing, so the unit is forced to align two axes
- Forgetting that surface speed rises with diameter, so the rated rpm is lower for larger bores
- Not stating which circuits need screening or twisted pairs for encoder and fieldbus signals
Moog AC4598 (AC6419 sealed): frequently asked questions
Can you help replace Moog AC4598 (AC6419 sealed) or source the original?
Send the full model code, quantity and required date. Our engineers can check original-part availability and assess suitable alternatives, including Motion Control Products options where appropriate. We confirm compatibility and any changes needed before recommending a replacement.
What is the Moog AC4598 (AC6419 sealed)?
Inch-and-a-half bore industrial slip ring rated 10 A at 600 VAC in 6 to 24 circuit builds. The AC6419 is the IP65-sealed version; Ethernet options exist. Published series figures include circuits 24, current per circuit 10 A, voltage 600 V, speed 250 rpm. It is made by Moog Inc.; Specify Motion can help source it or propose an equivalent.
What model codes are in the Moog AC4598 (AC6419 sealed) range?
The AC4598 (AC6419 sealed) range includes AC4598, AC6419. The table on this page lists each published model code with its key figures. Send us the code you use, or the one you need to replace, and our engineers will confirm availability, lead time or the closest equivalent.
Who makes the Moog AC4598 (AC6419 sealed)?
The Moog AC4598 (AC6419 sealed) is made by Moog (Moog Inc.) and is listed here for engineers comparing options. Specify Motion is not affiliated with Moog Inc.; brand names are used only to identify the product.
What is the circuits of the Moog AC4598 (AC6419 sealed)?
The published series maximum circuits is 24. Individual models and sizes in the AC4598 (AC6419 sealed) range vary, so check the exact variant against your duty cycle, mounting and environment, or ask our engineers to confirm the right size for you.
Is there an alternative to the Moog AC4598 (AC6419 sealed)?
We can assess suitable replacement options. Our engineers can review the original model and propose options for your load, speed and environment. An engineer confirms the fit against your application before recommending anything.
How do I choose the bore size for a through-bore slip ring?
Start with the shaft diameter and its tolerance, then add anything else that must pass through the centre, such as hoses, a rotary union stem or a fibre. Allow clearance for assembly and for the insulating sleeve. Larger bores raise surface speed, cost and drag torque, so pick the smallest bore that genuinely clears what has to pass through.
Can a through-bore slip ring carry Ethernet as well as power?
Yes. Many through-bore units combine power rings with signal rings designed for industrial Ethernet, using controlled impedance, twisted-pair routing and screening between groups. State the protocol and speed, typically 100 Mbit/s or gigabit, so the supplier can allocate suitable rings and keep them away from motor power. For very high data rates, a contactless or fibre channel may be added.
Further reading: How to select a slip ring · Ethernet through slip rings · Slip rings
Other through-bore slip rings series
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Tell us about your project and how you use the Moog AC4598 (AC6419 sealed): the load, speed, duty and environment. An experienced engineer will review it and reply, normally within one working day.
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