• Lamb Ametek 117939 Central Vacuum Motor, 3-Stage
1 1

MD Central Vacuum

MD Central Vacuum Lamb Ametek 117939 Motor, 3-Stage

MD Central Vacuum Lamb Ametek 117939 Motor, 3-Stage

$162.99 USD
$162.99 USD
Sale Sold out
Shipping calculated at checkout.

199R
Free Shipping On Eligible Orders $100+
Genuine Parts OEM Quality
Secure Checkout SSL Encrypted

Shipping Information

We offer free standard shipping on eligible orders of $100 or more within the 48 contiguous United States. Eligibility is calculated on the merchandise subtotal after discounts and before tax.

Most in-stock orders using standard shipping are processed within 1-5 business days, and most arrive 2-11 business days after they are placed. Backordered and special-order items may take longer. Expedited UPS Ground is available at checkout for an extra charge, including on orders that qualify for free standard shipping. See our Shipping Policy for details.

Returns & Exchanges

Need to return an item? We’re happy to help. Eligible items may be returned by requesting authorization within 35 days of delivery. Once approved, your return must reach us within 21 days.

Return eligibility

Items must be unused, in new condition, and include their original packaging and all accessories. Machines that use water cannot be returned once unboxed, unless defective upon arrival.

Shipping and refunds

For non-defective returns, customers cover return shipping. Original shipping charges are nonrefundable. If your order included free shipping, our actual outbound shipping cost will be deducted from your refund. Eligible returns have no restocking fee.

Received a defective item?

Contact us so we can help arrange a prepaid return label and replacement.

Please review our Return & Refund Policy for complete details and exclusions.

Warranty Information

All products sold by Vacuums and More come with the manufacturer's warranty. Warranty terms vary by brand and product.

With 35 years of industry experience, we stand behind every product we sell. Contact us for warranty support.

View full details

MD Central Vacuum Lamb Amet...

$162.99

Product details

The Lamb Ametek 117939, sold here as part 199R, is a three-stage central vacuum motor with a 5.7 inch bottom diameter. MD publishes it at 138.6 inches of water lift, 101.2 CFM, 458 air watts and 13.6 amps on 110-120 volt power at 50-60 Hz, standing 8 inches tall with a bolt height of 3-1/2 inches.

Stacking three fan wheels in series instead of one or two is how a motor of this modest diameter reaches that water lift figure without moving to a larger frame. Ametek lists the 117939 as a 5.7 inch bypass peripheral motor on its Acustek platform at 1,600 watts, with 833423-51 as the replacement brush kit.

  • Part: Lamb Ametek 117939, sold as part 199R
  • Build: three-stage bypass peripheral, 1,600 watts
  • Bottom diameter: 5.7 inches, bolt height 3-1/2 inches
  • Voltage: 110-120 volt, 50-60 Hz
  • Published performance: 138.6 inches water lift, 101.2 CFM, 458 air watts, 13.6 amps

MD notes this motor is sometimes stamped 7939 or 11-7939 rather than the full number, and lists the part as replacing the 117939 alone. Check the stamped number, the bolt height and the wire terminals on the motor coming out rather than going by the brand or model name on the cabinet.

Verified against: MD Central Vacuum data for Lamb Ametek 117939, part 199R