7.2 Inch Motor Gasket for Beam Central Vacuum – Part# 220
7.2-inch motor mounting gasket. Match motor diameter, mounting arrangement and the original gasket before fitting.
The 117478 Lamb motor is a brand-new replacement motor for select central vacuum systems and blowers. It fits listed Beam models and replaces the 117549 motor with higher stated airwatts.
Available from Ace Vacuums, with help matching parts to your Beam central vacuum system at our Fairfax and Leesburg, VA showrooms.
The 117478 Lamb Ametek motor is used in select SilentMaster, Beam, Electrolux, and Vacuflo central vacuum systems. It may also be marked 7478 or 11-7478, and is compatible with 117478 motors such as the 117478-12.
This brand-new motor installs with three bolts and a couple of wires. The carbon brushes are replaceable, and the motor can replace a 117549 motor when the system and fit are confirmed.
This part is listed as the match for these Beam central vacuum models:
Check the model number on your power unit label before ordering. Our team can confirm the match if you are unsure.
| Specification | Details |
|---|---|
| Brand | AMETEK Lamb |
| Motor part number | 117478 |
| Alternate markings | 7478 or 11-7478 |
| Compatible motor numbers | 117478, including 117478-12 |
| Replacement for | 117549 |
| Fan stages | 2 |
| Bottom diameter | 7.2 inches |
| Voltage | 110–120V |
| Frequency | 50–60 Hz |
| Height | 7-3/4 inches |
| Bolt height | 1-3/4 inches |
| Waterlift | 120 inches |
| Airflow | 115.8 CFM |
| Airwatts | 549 |
| Amps | 13.5 |
| Listed Beam models | 2875 (120V), 310 (120V), 387 (120V), 875 (120V) |
| Core trade-in | None |
| Authorized Dealer | Ace Vacuums |
When you purchase from Ace Vacuums, you receive:
The AMETEK Lamb 117478 Vacuum Motor for Beam Central Vacuum is available online and in-store through Ace Vacuums.
Call 703-997-9292 (ext. 1 Fairfax, ext. 2 Leesburg).
The 117478 Lamb motor is a brand-new replacement motor for select central vacuum systems and blowers. It fits listed Beam models and replaces the 117549 motor with higher stated airwatts.
Available from Ace Vacuums, with help matching parts to your Beam central vacuum system at our Fairfax and Leesburg, VA showrooms.
The 117478 Lamb Ametek motor is used in select SilentMaster, Beam, Electrolux, and Vacuflo central vacuum systems. It may also be marked 7478 or 11-7478, and is compatible with 117478 motors such as the 117478-12.
This brand-new motor installs with three bolts and a couple of wires. The carbon brushes are replaceable, and the motor can replace a 117549 motor when the system and fit are confirmed.
This part is listed as the match for these Beam central vacuum models:
Check the model number on your power unit label before ordering. Our team can confirm the match if you are unsure.
| Specification | Details |
|---|---|
| Brand | AMETEK Lamb |
| Motor part number | 117478 |
| Alternate markings | 7478 or 11-7478 |
| Compatible motor numbers | 117478, including 117478-12 |
| Replacement for | 117549 |
| Fan stages | 2 |
| Bottom diameter | 7.2 inches |
| Voltage | 110–120V |
| Frequency | 50–60 Hz |
| Height | 7-3/4 inches |
| Bolt height | 1-3/4 inches |
| Waterlift | 120 inches |
| Airflow | 115.8 CFM |
| Airwatts | 549 |
| Amps | 13.5 |
| Listed Beam models | 2875 (120V), 310 (120V), 387 (120V), 875 (120V) |
| Core trade-in | None |
| Authorized Dealer | Ace Vacuums |
When you purchase from Ace Vacuums, you receive:
The AMETEK Lamb 117478 Vacuum Motor for Beam Central Vacuum is available online and in-store through Ace Vacuums.
Call 703-997-9292 (ext. 1 Fairfax, ext. 2 Leesburg).
The record lists Beam 2875, 310, 387, and 875 models, all in 120V versions. Confirm your model before ordering.
No. This is an AMETEK Lamb motor listed for use with select Beam central vacuum systems.
The 117478 can replace motor 117549 and is also compatible with 117478 motors, including 117478-12.
The motor is rated for 110–120V, 50–60 Hz, and 13.5 amps.
Possible signs include a popping mini breaker, electrical smell, excessive blue sparks from the motor top, hearing only a click, or a motor that shuts down and later works again.
Yes. The Lamb 117478 has carbon motor brushes that can be replaced, and two brushes are needed for a brush replacement.
The record describes installation as involving three bolts and a couple of wires. Follow the appropriate replacement instructions for your system.
No fit is universal. Confirm your Beam model or inlet and compare the motor specifications before ordering, especially if your system is not one of the listed models.
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Address: 11110 Main St, Fairfax, VA 22030
Landmark: Opposite Havertys Furniture Store
Best for: Bethesda, Potomac, Arlington, NW Washington D.C.
Address: 300 Fort Evans Rd NE, Suite 104, Leesburg, VA 20176
Landmark: Next to Home Depot in Leesburg
Best for: Ashburn, Sterling, Frederick MD, Loudoun County
In-stock merchandise generally ships from our Leesburg, Virginia location within 3–5 business days. Processing time is separate from carrier transit time and is not a guaranteed delivery date. Weekends and holidays can affect timing. Special-order, backordered or unavailable items may take longer; contact us to confirm timing before purchase when a deadline matters.
Shipping options and charges are shown at checkout. After dispatch, follow the carrier's tracking updates. Weather, carrier delays, order verification and inventory confirmation may affect delivery. Inspect packages promptly and retain packaging if there is damage or an incorrect or missing item.
Eligible unused items have a 30-calendar-day return request window for refunds or exchanges, measured from delivery or in-store purchase. Return authorization is required. Final-sale exclusions, the 15% restocking fee for change-of-mind returns and shipping responsibilities are explained in our Return and Refund Policy. That policy is the governing source for return eligibility and fees.
For shipping or return help, email sales@acevacuums.com or call 703-997-9292.
Updated September 27, 2026. Request a return for an eligible unused item within 30 calendar days of delivery (or purchase for items collected in store). Eligible returns may be refunded to the original payment method or exchanged, subject to availability. The same 30-day request window applies to both refunds and exchanges; there is no separate seven-day or 15-day refund deadline.
Items must be unused, clean, complete and in their original packaging with all accessories, manuals and proof of purchase. Contact sales@acevacuums.com or 703-997-9292 before sending anything back. Include your order number, item and reason for return. We will confirm eligibility, charges and return instructions. Unapproved or cash-on-delivery returns are not accepted.
For an approved change-of-mind return, a 15% restocking fee applies to the returned merchandise price. Original shipping charges are not refundable and the customer pays return shipping. These charges do not apply to an approved return caused by our shipping error or a damaged/defective item claim. Contact us first so we can arrange the appropriate remedy and shipping instructions. Do not assume a prepaid label is included.
Air purifiers; discounted, clearance, trade-in, holiday-sale and price-matched purchases; gift cards; custom or special-order products; electrical parts; used or installed items; opened cleaning solutions; and used bags, filters, belts or other consumables are not eligible for change-of-mind returns. Other items clearly marked final sale at purchase are also excluded. An opened box alone does not disqualify an otherwise eligible unused, complete item, but consumables and cleaning solutions must remain unopened.
Inspect your order promptly and contact us as soon as you discover a problem, with your order number and photos where helpful. Keep the packaging. Change-of-mind exclusions and deadlines do not remove applicable defect, warranty, recall or statutory rights. Warranty coverage requires evaluation under the manufacturer's terms; dealer status does not guarantee free repair. Recalled products must follow the manufacturer's recall process.
After we receive and inspect the return, we will notify you of approval or the reason it cannot be accepted. Approved refunds are issued to the original payment method within 10 business days of approval; your bank may take additional time to post them. Contact us if more than 15 business days have passed since approval. Exchanges require authorization and replacement availability; any price difference and applicable charges will be explained before processing.
This policy applies to online and in-store purchases. We will honor more favorable written return terms provided with an earlier purchase. Applicable consumer rights remain unaffected. Where the European Union 14-day cancellation right applies, customers may cancel or return eligible orders within 14 days of receipt, subject to applicable legal exceptions, without giving a reason.
Maintenance and companion parts for this repair category. The exact motor, board or powerhead number determines the replacement you need.
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7.2-inch motor mounting gasket. Match motor diameter, mounting arrangement and the original gasket before fitting.
25 maintenance sheets for routine central-vacuum hose and pipe care. Follow the label and system instructions; not a repair for a blocked or damaged system.
Current Beam 205 / 345 / 360 models use the 11-inch filter; 398 / 475 / 495 / 3600 / 4500 use the 14-inch filter. TDSAC93BM bags follow the listed compatible model path. Short TDSAC92BM bags are for the 275 path; #4462 bags are a separate configuration. Confirm older units and production versions before ordering. Check Beam’s official fit guide
For 25+ years, Ace Vacuums has filled the gap left by big-box retailers. We provide the expert repairs, warranty support, and genuine OEM parts that Amazon and Walmart simply don't offer. From free estimates to same-day service, we are your local alternative for professional home care solutions.
Conveniently serving Washington D.C. and Maryland (Montgomery & Prince George's Counties). Our showrooms are just 20 minutes from DC and 10 minutes from Tysons Corner.
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Serving Zip Codes: 20147, 20176, 22030, 22031, 20151, 20190, 22102, 22314, 20110, 20148 & surrounding areas. All repairs performed by certified technicians using genuine parts.