Company profile
Moog
Moog Inc. is an American designer and maker of precision motion control equipment, founded in July 1951 and headquartered at 400 Jamison Road, Elma, New York, on +1 716 652 2000. Its UK company, Moog Ltd, lists Ashchurch Parkway, Tewkesbury, on +44 1684 858000, and Moog shares trade on the NYSE as MOG.A.
| Legal name | Moog Inc. |
|---|---|
| Founded | 1951 |
| Founder | Bill Moog, Art Moog and Lou Geyer |
| Owner / parent | Moog Inc. |
| Headquarters | Elma, New York 14059, United States |
| Employees | more than 13,500 (fiscal 2025 annual report) |
| Stock listing | NYSE: MOG.A |
| Website | moog.com |
Moog contact details
Corporate headquarters
400 Jamison RoadElma, New York 14059
United States
Telephone +1 716 652 2000
Website moog.com
UK: Moog Ltd
Ashchurch ParkwayTewkesbury, Gloucestershire GL20 8TU
United Kingdom
Telephone +44 1684 858000
Blacksburg, Virginia site
1213 N Main StBlacksburg, Virginia 24060
United States
Telephone +1 540 552 3011
Contact details as published by Moog Inc., checked 2026-10-30. Specify Motion is not affiliated with Moog Inc..
Moog product lines
| Industrial slip rings | Compact, capsule, through-bore, high-speed, Ethernet and large-diameter slip rings |
|---|---|
| Fibre optic rotary joints | Single- and multi-channel FORJs for optical data across rotation |
| Contactless data rings | ROTOCAP capacitive and ROTORAY optoelectronic data transmission |
| Rotary unions and media units | Fluid passages combined with or alongside slip rings |
| Application-specific rotary products | CT medical, wind pitch, packaging, marine, subsea and defence slip rings |
| Actuation and motion control | Actuation technology, control electronics and system software for aerospace, defence, industrial and medical uses |
Who Moog is
Moog Inc. is an American engineering company that designs and manufactures precision motion control components and systems. Its own description covers aerospace, defence, industrial and medical applications where velocity, force, acceleration and fluid flow must be controlled precisely, and its portfolio spans actuation technology, control electronics and system software. Moog reports its business in four segments: Space and Defense, Military Aircraft, Commercial Aircraft, and Industrial.
For readers of this site, Moog is best known as one of the major manufacturers of slip rings and fibre optic rotary joints, the components that carry power, signals and data across a rotating interface. Moog is a trademark of its owner.
History and ownership
Moog’s history starts in July 1951, when Bill Moog, Art Moog and Lou Geyer pooled US$3,000 and opened Moog Valve in the corner of an aircraft hangar with one product. The company grew from servo valves into a broad motion control business and marks its 75th anniversary in 2026.
Moog Inc. is a New York corporation and is publicly listed, with its class A shares trading on the New York Stock Exchange as MOG.A. Its fiscal 2025 Form 10-K reports net sales of US$3,861 million for the year ended 27 September 2025 and more than 13,500 employees in over 20 countries. The same report notes divestitures at the start of fiscal 2025, mainly in industrial automation, as part of portfolio shaping.
Within Moog’s reporting, slip rings for CT scanners appear under the medical market in the Industrial segment.
Slip rings and rotary products
Moog’s commercial and industrial slip ring range spans compact capsules, Ethernet slip rings carrying Ethernet and HD video, high-speed capsules with fibre brush contacts rated up to 10,000 rpm, through-bore designs and large-diameter rings, with legacy products marked as end of life. Our records include over 90 Moog series. Representative ones are:
- Capsules: AC6355 one-inch capsule with up to 56 circuits, and miniature gold capsules for gimbals and airborne cameras.
- Through-bore industrial rings: AC4598, AC6200, AC6098 and the compact SRA-73683.
- Modular and split designs: Endura-Trac Standard W and split slip rings that fit round an existing shaft.
- Contactless data: ROTOCAP capacitive data rings and ROTORAY OE1 optoelectronic data transmitters.
- Gold contact rings with media options: Rotoflux ESR 70.
- Large and application-specific rings: large-diameter slip rings, medical CT slip rings, wind power, packaging and vehicular turret slip rings.
- Marine and optical: Model 129 high-voltage winch slip ring and the FO197 fibre optic rotary joint.
- Fluids: Model 70 rotary union.
Some older series, such as the P Series and PH Series capsules, are listed by Moog as legacy or end-of-life products. For how slip rings are specified, see our slip rings hub and the guide on how to specify a slip ring.
What Moog is known for technically
Moog uses fibre brush contacts in its high-speed capsules and through-bore slip rings. In a fibre brush, bundles of fine metal fibres replace a single wire or block brush. Fibre brushes share the current across many contact points, which tends to lower wear and electrical noise and suits higher speeds; Moog’s high-speed capsules rely on it. The company also offers non-contacting data transfer, capacitive (ROTOCAP) and optoelectronic (ROTORAY), for industrial Ethernet where a sliding contact would limit bandwidth or life.
Its application ranges show the other strength, and they are worth reading before asking for a custom design: integrating power, data, fibre optics and fluid passages into one rotary assembly for a specific machine, such as a CT gantry, a wind turbine pitch system or a vehicle turret.
Industries served
Moog’s annual report lists markets across space and defence, military and commercial aircraft, industrial automation and medical equipment. For slip rings specifically, its pages cite camera systems, robotics, packaging machines, medical equipment and general automation, alongside marine, wind and defence applications.
Global and UK presence
Moog operates facilities around the world and lists the UK as a principal manufacturing location. Its facilities directory shows UK sites including Moog Ltd at Ashchurch Parkway, Tewkesbury, as well as Luton and Wolverhampton. Product-level enquiries, including slip rings, go through the contact form on each product page.
Specify Motion and Moog
Specify Motion is independent of Moog and is not a distributor for it. We can help you source Moog slip rings where available, or propose equivalents from our supply network that meet the same published specification, confirmed by an engineer. See our page on alternatives to Moog slip rings or use find a replacement with your current part number.
Contact details at a glance
- Corporate headquarters: 400 Jamison Road, Elma, New York 14059, USA
- Phone: +1 716 652 2000
- UK: Moog Ltd, Ashchurch Parkway, Tewkesbury GL20 8TU, +44 1684 858000
- Website: moog.com
Contact details were taken from Moog’s own website and annual report on 30 October 2026.
Moog history: key dates
- 1951In July, Bill Moog, Art Moog and Lou Geyer pool US$3,000 and open Moog Valve
- 2025Divestitures at the start of fiscal 2025, mainly in industrial automation, reduce Industrial segment sales
- 2025Fiscal year to 27 September 2025: net sales of US$3,861 million, more than 13,500 employees in over 20 countries
- 2026Moog marks its 75th anniversary
Moog slip rings
SRA-73683
Very compact through-bore slip ring with a half-inch bore and gold contacts for low-current signals. Ethernet-capable counterpart is the SRA-73801.
SRA-73830
Half-inch bore compact slip ring offering 2 to 22 circuits with mixed 2 A and 8 A ratings. Variants add Ethernet or a single-channel fibre optic rotary joint in the bore (SRA-73830-[ ]-JXX).
AC6438
Half-inch through-bore slip ring using fibre brush contacts, rated 5 A per circuit in 6 to 24 circuit builds. Ethernet available on request.
AC6349 / AC6875
One-inch bore slip ring carrying 15 A per circuit at up to 440 VAC; AC6875 was the IP65-sealed version. Moog lists both as end-of-life legacy products.
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.
AC6200
Inch-and-a-half bore slip ring for higher signal counts (up to 48 at 2 A) with mixed power/signal builds adding 10 A rings. Shares the AC4598 housing.
AC6815
High circuit-count through-bore slip ring with up to 128 circuits and gold bifurcated brushes. Supports 10/100/1000BaseT Ethernet.
AC6428
Signal-dense through-bore slip ring offering 60 to 96 circuits at 2 A through a 1-3/8 inch bore. Sealed against dust and light splash.
AC6429
Mixed power and signal through-bore slip ring combining 48 x 2 A signal rings with 6 or 12 x 10 A power rings.
AC6275 (AC6793 sealed)
Large 2-3/4 inch bore slip ring rated for 1,000 rpm with power rings up to 50 A and up to 144 signal circuits. AC6793 is the IP65-sealed version.
AC6098
Four-inch bore industrial slip ring offering up to 72 signal rings or power rings up to 50 A at 600 VAC.
AC7296
One-inch bore slip ring combining gigabit Ethernet with signal and 10/25 A power rings, rated to 500 rpm.
Endura-Trac Standard W Series
Low-speed modular through-bore slip ring in 1.5 or 3.0 inch bores with an all-metal dust cover and open-frame option.
Endura-Trac Fiber W Series
Modular fibre-brush through-bore slip ring scalable to a 9 inch bore with optional NEMA 12 sealing.
Flow Pack F 7270
Small through-bore slip ring sized for flow-pack packaging machines, carrying 20 A power lines and low-current data lines at up to 500 rpm.
Split slip rings (56814, 56871, 57165, 57622)
Two-piece split slip rings that can be fitted around an existing shaft without disassembly, offered in several bore sizes.
SRA-73540
Moog's smallest listed capsule slip ring, under half an inch in diameter, with 6 or 12 gold-contact circuits.
SRA-73625
Miniature 18-circuit capsule slip ring in the same diameter as the SRA-73540; a GigE version is the SRA-73799.
AC6373
Half-inch diameter capsule slip ring with 6 or 12 circuits for slow-turning compact devices.
SRA-73762
Slim capsule slip ring offering 12 to 24 gold-on-gold circuits in a 15.5 mm diameter.
SRA-73526 / SRA-73528 / SRA-73599
Family of 22 mm capsule slip rings spanning 6 to 24 circuits at 2 A.
AC6023
General-purpose 22 mm capsule slip ring in 6 to 24 circuit lengths with optional splash seals.
AC6305
22 mm capsule combining three 5 A power circuits with 6, 9 or 12 signal circuits.
AC6310
22 mm capsule combining three 10 A power circuits with 3 or 6 signal circuits.
SRA-73574 / SRA-73587
22 mm capsule slip rings with 36 signal circuits, or a mix of 10 A power and 2 A signals on the SRA-73587.
AC6355
One-inch capsule slip ring with 36 or 56 circuits, plus variants mixing 5 A rings and 50/75 ohm coax.
AC7356
IP65-sealed aluminium capsule slip ring in 36 or 56 circuit builds, replacing the AC7038.
AC7094
Larger capsule slip ring offering 30 to 48 circuits rated 5 A.
AC7036
Concentric assembly pairing an AC6349-style 15 A outer slip ring with an inner capsule for signals.
AC7212
Concentric assembly using an AC4598 or AC6200 outer ring with a selectable inner capsule including Ethernet/video capsules.
P Series
Compact capsule slip ring with 2 to 8 circuits up to 14 A; now listed by Moog as an end-of-life legacy product.
Rotoflux ESR 70
Gold/gold contact slip ring of 70 mm diameter with up to 24 circuits, IP64 sealing and an optional air channel; fieldbus data is supported.
Rotoflux ESR 110
110 mm diameter gold/gold slip ring with up to 32 circuits at 30 A, IP64, with an optional air channel.
EC3848 (incl. EC4294, EC4199)
Small high-speed capsule slip ring rated to 10,000 rpm for low-level signals, used in centrifuges and medical instruments.
AC6231 / AC6266
Through-bore high-speed slip ring rated 15 A per circuit at up to 2,500 rpm, in 8 (AC6231) or 4 (AC6266) circuit versions.
AC3757
36-circuit high-speed capsule rated to 6,000 rpm.
PH Series
Through-bore high-speed slip ring rated to 20,000 rpm with 8 or 12 circuits; now an end-of-life legacy product.
PM Series
High-speed capsule slip ring rated to 12,000 rpm in 8 to 24 circuit builds; listed as legacy.
SRA-73799 / SRA-73806
Moog's smallest Ethernet capsule at 0.44 inch diameter, carrying gigabit (SRA-73799) or 100BaseT (SRA-73806) alongside 2 A contacts.
SRA-73798 / SRA-73805
Compact 0.61 inch Ethernet capsule with 12 contacts and gigabit or 100BaseT data.
AC7203
22 mm Ethernet capsule in four lengths combining 10/100 or gigabit Ethernet with 2, 5 or 10 A power circuits.
AC7188
22 mm capsule carrying HD-SDI video with 2 A and 5 A contacts.
SRA-73810
Compact HD/SD-SDI video capsule with 12 x 2 A contacts.
SRA-73811
Dual-channel HD video capsule with four 2 A contacts.
AC7195
One-inch capsule combining multiple Ethernet lines, HD video and coax options with 2 to 10 A power circuits.
AC7217
Shorter one-inch Ethernet/video capsule related to the AC7195, with coax options.
AC7183
Fully configurable capsule carrying multiple Ethernet channels and HD-SDI with 2 to 10 A power.
SRA-73801 / SRA-73808
Most compact Moog through-bore Ethernet slip ring with a half-inch bore, carrying Ethernet plus 2 A circuits.
ROTOCAP (CAP 160/220/350/400)
Contactless capacitive data ring for transferring industrial Ethernet across rotation, often paired with contact power tracks or rotary unions.
ROTORAY OE1
Non-contacting optoelectronic rotary data transmitter for Fast and Gigabit Ethernet and real-time industrial protocols, with no inner bore.
Large Diameter Slip Rings (CT6455, CT6536, CT6764, CT6970, CT7013, CT7093, CT7138, CT7311)
Platter and drum style slip rings for very large rotating structures, with optional fibre optic or non-contacting high-speed data links and integrated encoders.
Medical / CT scan slip rings
Large-diameter slip rings developed with CT system manufacturers, using optical and RF/capacitive coupled data rings for high-speed image data.
F 7154 B
Low-speed 50 mm bore medical slip ring with five 12 A circuits.
Automotive manufacturing hybrid slip rings (F 5812, F 5051, F 6300, F 5827, F 4509)
Hybrid slip rings for automotive production cells combining power, fieldbus and air/water passages for turntables and welding robots.
Mobile equipment slip rings (F 5769 MR, F 7052, F 5892, F 5947)
Heavy-duty slip rings for cranes, excavators and aerial platforms, combining high power, CAN/Ethernet data and high-pressure hydraulic passages.
Packaging slip rings (F 7019, F 7170, F 8000)
Slip rings and media units for winders, flow-pack and stretch-wrapping machines, with drive and fieldbus data options.
Wind power slip rings and rotary unions
Combined slip ring and hydraulic rotary union assemblies for turbine pitch systems, many based on Rotoflux ESR rings.
Rotopack
Multi-channel fluid rotary union for media transfer at moderate speeds.
Model 70
Low-speed multi-passage fluid rotary union for gases and liquids.
Model 129
High-power winch slip ring for marine handling systems, rated to 7.2 kV.
Model 130
Large high-power marine slip ring with FORJ option for slow-turning winches.
Model 159
Winch slip ring with 60 A passes and up to 1,000 A total current at 7.2 kV.
Model 176
Variable-length marine slip ring, also available as an electro-optical hybrid with up to 52 fibre passes.
Model 180
Compact marine slip ring rated to 1 kV, available with integrated FORJ of up to 12 singlemode and 12 multimode passes.
Model 173
Electro-optical hybrid marine rotary unit combining up to 52 fibre passes with high-voltage power.
Model 200
Hybrid marine unit with up to 12 singlemode and 12 multimode fibre passes plus 1 kV electrical.
H18 / H24
Hybrid units pairing a single singlemode or multimode fibre pass with 18 (H18) or 24 (H24) electrical signal circuits.
Model 303 downhole
Oil-filled slip rings for high-temperature, high-pressure downhole tools, in miniature-bore, large-bore and 20-channel high-voltage versions.
FPS swivels (430, 432, 440, 450, 460, 461, 480)
Very large electrical and electro-optical swivels for floating production systems, up to 145 kV, with hazardous-area protection.
F 5408
Compact single-channel multimode FORJ from the Moog Rekofa line, rated to 1,000 rpm.
FO197
Single-channel multimode fibre optic rotary joint for continuous rotation up to 1,000 rpm.
FO197S
Extended-temperature version of the FO197 single-channel multimode FORJ.
FO206
Single-channel singlemode FORJ rated to 1,000 rpm.
FO228
Short single-channel multimode FORJ for low-speed rotation.
FO285
Miniature single-channel singlemode FORJ with a wide -55 °C operating range.
FO286
Miniature single-channel multimode FORJ, the shortest in Moog's single-channel range.
FO310
Low-loss single-channel FORJ available for singlemode or multimode fibre.
FO292
Two-channel multimode FORJ rated to 500+ rpm; replacement for the legacy FO215.
FO292RA
Right-angle two-channel multimode FORJ.
FO291
Modular stacked singlemode FORJ in 2 to 9 channel builds; replacement for the legacy FO242.
FO190
Stacked-module multimode FORJ scalable from 2 to 21 channels; can be combined with FO291 for hybrid SM/MM.
FO300 (A/B/C)
Prism-based multichannel FORJ using one de-rotating element for all channels, up to 52 channels in the C size. Subsea pressure-compensated versions are offered.
FO319
Two-channel singlemode FORJ with an extended -46 to +71 °C range.
FO215
Legacy fibre optic rotary joint; Moog directs new designs to the FO292.
FO242
Legacy stacked-module FORJ; Moog directs new designs to the FO291.
Vehicular / turret slip rings (VSR-2000, VSR-3733, VSR-4906, VSR-4994, VSR-6057, VSR-6772, VSR-7001, AC3497, AC6033)
Environmentally sealed, EMI-shielded through-bore slip rings for armoured vehicle turrets, combining high-current power, signal, video, data bus and Ethernet channels.
Helicopter slip rings
Rotorcraft slip rings for blade de-ice, blade position, tip lights and sensor turrets, designed for wide temperature and vibration envelopes.
Electro-optic (EO/IR) slip rings
High-bandwidth slip rings and slip ring/FORJ hybrids for EO/IR gimbals and targeting pods.
Propeller de-ice slip rings
Beryllium-free propeller slip rings for turboprop de-icing with brush replacement as the only maintenance.
Miniature gold capsules (AC264, AC267, AC6292, RE4815, RK4288)
Low-torque gold-on-gold miniature capsules for gimbals, INS platforms and airborne cameras, with very high circuit density.
M Series (1021202)
Flange-mounted capsule with up to 120 circuits and bidirectional rotation to 1,000 rpm, optionally with FORJ.
Fiber brush separates
Unhoused ring and brush-block sets using fibre brush contacts for integration into customer structures.
Standard Marine and Winch Slip Rings
Sealed slip rings (models 129, 130, 159, 176 and 180) for winches in harsh marine service, carrying medium-voltage power to cable drums. Serve offshore oil and gas, oceanographic and seismic vessels.
Seismic Slip Rings
Marine slip rings for seabed survey vessels that combine high-power rings, Ethernet, optical channels and air ports in one unit. Also used on gun winches.
Single Channel Fiber Optic Rotary Joints
Compact single-fibre rotary joints in singlemode and multimode versions (F 5408, FO197, FO206, FO285 and others). The smallest and lowest-cost way to send one optical link across rotation.
Frequently asked questions
What is the Moog website?
Moog's website is moog.com. It covers the company's aerospace, defence, space, industrial and medical products, including the slip ring and fibre optic rotary joint ranges, plus investor information, news and the Moog facilities directory with addresses and phone numbers for sites worldwide, including those in the United Kingdom.
What is the Moog phone number?
Moog's corporate headquarters lists +1 716 652 2000. In the UK, Moog Ltd at Tewkesbury lists +44 (0) 1684 858000. For slip rings and other products, Moog's website also offers a contact-our-experts form on each product page, which routes enquiries to the right business. Moog does not publish a single general email address on its contact page.
Where is Moog's headquarters?
Moog's corporate headquarters is at 400 Jamison Road, Elma, New York 14059, USA, near Buffalo. Its post office address is East Aurora, NY 14052-0018, and its annual report gives the principal executive office as 400 Jamison Road, East Aurora. Both refer to the same site.
Who owns Moog?
Moog Inc. is a publicly listed New York corporation formed in 1951. Its class A shares trade on the New York Stock Exchange as MOG.A. The company was founded by Bill Moog, Art Moog and Lou Geyer, who opened Moog Valve in July 1951.
Does Moog have a UK office?
Yes. Moog lists several UK facilities, including Moog Ltd at Ashchurch Parkway, Tewkesbury, Gloucestershire GL20 8TU, phone +44 1684 858000, and sites at Luton and Wolverhampton. Moog's annual report names the UK as a principal manufacturing location across its segments. For slip ring enquiries, use the product contact form so the right team responds.
What does Moog make?
Moog designs and makes precision motion control components and systems for aircraft, space and defence, industrial and medical markets. In rotary transfer it is known for slip rings, fibre optic rotary joints, contactless data rings and rotary unions, used in CT scanners, wind turbines, packaging machines, robotics, marine winches and defence turrets.
Sources
- Moog: About Moog
- Moog: Contact us (corporate headquarters)
- Moog: Moog facilities
- Moog: Stock information (NYSE: MOG.A)
- Moog Inc. Form 10-K for fiscal 2025
- Moog: Financial information
- Moog: Commercial and industrial slip rings
Figures are summarised from the sources above and from manufacturers' published data on the date shown. Always confirm against the current datasheet for your exact part.
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