Moog 800-336-2112 Coil Ring Assembly | AC4598 Through-Bore Slip Ring
Used, 1.5" Bore, 10A per Circuit, Fiber Brush, Up to 250 RPM
Product Overview
This listing is for a used Moog 800-336-2112 coil ring assembly - a through-bore slip ring from the AC4598 series, one of the most widely deployed industrial slip ring platforms manufactured by Moog Components Group (formerly Litton Poly-Scientific). The unit has been removed from prior service and is offered as tested surplus or exchange stock.
The assembly passes power and signal circuits across a continuously rotating interface through a 1.5-inch central bore, allowing hydraulic lines, pneumatic tubing, or a concentric shaft to pass through the center while electrical connections rotate freely without twisting or accumulating mechanical stress.
Key Specifications
| Part Number |
800-336-2112 |
| Product Family |
AC4598 Series |
| Through-Bore Diameter |
1.5 inches (38.1 mm) |
| Current per Circuit |
10 A |
| Voltage Rating |
Up to 600 VAC |
| Circuit Options |
6, 12, 18, or 24 circuits |
| Maximum Speed (Standard) |
250 RPM continuous |
| Contact Technology |
Fiber Brush |
| Lead Wire Gauge |
16 AWG |
| Lead Wire Length (Standard) |
12 inches |
| Mounting |
Collar mount standard; flange optional |
| Outside Diameter (Flange Option) |
5 inches (127 mm) |
| Sealing |
Splash seal (dust and moisture resistance) |
| Signal Compatibility |
Analog, digital, data bus protocols |
| Manufacturer |
Moog Components Group |
| Country of Origin |
USA |
Through-Bore Slip Ring Functionality
A slip ring transfers electrical power and signals across a rotating interface without angular limits. The through-bore design features an unobstructed 1.5-inch bore running through its center axis, serving as a passage for hydraulic pressure lines, pneumatic supply tubing, or concentric shafts that must pass through without electrical connection.
This design eliminates the need for twisting cables that accumulate fatigue and eventually break, replacing them with rolling electrical contacts designed for millions of rotations.
Fiber Brush Contact Technology
The fiber brush contact system uses bundles of individually conductive fibers that ride against the rotating ring surface, creating multiple contact points simultaneously. This design provides several key advantages:
- Extended service life with low mechanical wear
- Minimal electrical noise for clean signal transmission
- No lubrication requirements
- Virtually no wear debris generation
- Consistent contact resistance over service life
Circuit Configuration & X-Suffix Variants
The AC4598 platform ships in standard configurations of 6, 12, 18, and 24 circuits, each at 10 amps. X-suffix variants (459806X028, 459812X142, etc.) encode specific circuit count, lead configuration, mounting arrangement, sealing, and lead length.
When replacing existing units, matching the full X-suffix ensures compatibility with original wiring and mounting configurations.
Industrial Applications
The AC4598/800-336-2112 serves a wide range of industrial rotating equipment including:
- Rotary index tables
- Cable reels for industrial vehicles
- Welding positioners
- Packaging machines with rotating carousels
- Palletizing systems with rotating platforms
- Turret-type machining centers
- Process control equipment with rotating sensors
Benefits of Used Units
Used Moog AC4598 units offer a cost-effective solution for restoring or upgrading systems without the lead time or cost of new OEM orders. The robust design and fiber brush technology provide substantial remaining service life even after extended prior use when operated within specifications.
Frequently Asked Questions
Q1: What is the difference between the 800-336-2112 part number and the AC4598 designation?
The AC4598 is Moog's product family designation for this through-bore slip ring platform. The 800-336-2112 is the Moog Components Group part number for the same product family. Both refer to the same 1.5-inch bore, 10A fiber brush slip ring series.
Q2: How many circuits does the 800-336-2112 support, and what is the maximum current and voltage?
The AC4598/800-336-2112 supports 6, 12, 18, or 24 circuits, each rated for 10 amps. The voltage rating is up to 600 VAC per circuit. Circuits can carry AC or DC power, analog signals, or digital data signals.
Q3: Does the fiber brush technology require maintenance or lubrication?
No. The fiber brush contact technology does not require lubrication, which is one of the primary design advantages over conventional metal wire brush slip rings. Maintenance is limited to periodic inspection of the contact assembly and lead wire condition.
Q4: Can hydraulic lines or pneumatic tubing pass through the 1.5-inch bore while the slip ring is in operation?
Yes - this is the purpose of the through-bore design. The 1.5-inch unobstructed bore allows hydraulic pressure lines, pneumatic supply tubing, or a concentric mechanical shaft to pass through the center of the assembly while the slip ring rotates independently around it.
Q5: How should a used 800-336-2112 be evaluated before installation?
Inspect lead wires for insulation damage, check the through-bore inner surface for fretting or scoring, rotate the assembly by hand to check bearing smoothness, and measure contact resistance on each circuit. A bench test connecting a known load to each circuit while rotating the assembly provides the most reliable validation.
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