Ametek Lamb Motor Rotating Fan 330/334 for all 7.2" Motors. 6 1/8 inch Part #31213

🛠️Product Introduction

Ametek Lamb Motor Rotating Fan 330/334 for 7.2" Motors – Part #31213
Upgrade or replace your motor fan assembly with the trusted Ametek Lamb Rotating Fan 330/334, engineered specifically for all 7.2-inch motors. With a 6 1/8-inch diameter, this precision-balanced fan ensures optimal airflow and reliable motor performance for high-demand commercial and industrial vacuum systems. Designed by Ametek, a leader in motor technology, this OEM replacement part (#31213) delivers durability and efficiency in every rotation.

✅Key Features Overview

• ✅ OEM Part #31213 – Genuine Ametek Lamb replacement

• ✅ 6 1/8-Inch Diameter – Perfect fit for 7.2” motors

• ✅ 330/334 Rotating Fan Design – Optimized blade pitch for airflow

• ✅ Balanced for High-Speed Operation – Reduces vibration and noise

• ✅ Compatible with Multiple Applications – Central vacuums, extractors, blowers & more

• ✅ High-Quality Aluminum Construction – Lightweight yet durable

⭐What Makes This Model Stand Out

What sets this rotating fan apart is its compatibility and performance consistency. Engineered by Ametek Lamb, it fits all 7.2-inch diameter motors, making it a go-to replacement across industries. Its 330/334 design optimizes rotational force, airflow balance, and energy efficiency. Whether you're servicing a commercial vacuum or restoring an industrial extractor, this fan delivers unmatched reliability.

📊Technical Specifications

🧑🔧Ideal Buyers – Who Should Buy It?

This rotating fan is ideal for:

• 🏭 Industrial Equipment Technicians

• 🧹 Commercial Cleaning Equipment Repair Shops

• 🏠 Central Vacuum System Owners

• 🛠️ HVAC & Appliance Repair Professionals

• 🧰 Facilities Maintenance Teams

• 🔄 DIY Motor Rebuilders and Upgraders

If you're replacing a fan in a 7.2" Ametek Lamb motor, this is the exact OEM part you need.

🛒Availability – Online and In-Store

✔️ Available Now:

• Online – Ships across the USA within 1-2 business days

• Retail Locations – Visit our authorized parts centers nationwide

• Bulk Orders – Contact us for wholesale and B2B discounts

📈Comparison Table

👍Pros and Cons

✅ Pros:

• Genuine OEM – no guessing fit or function

• Easy installation for professionals and DIYers

• Durable construction handles high RPM

• Quiet and balanced operation

⚠️ Cons:

• Not compatible with motors under 7.2”

• Slightly higher price than generic alternatives

• Requires professional tools for safe installation

❓Frequently Asked Questions 

1. Is this an OEM Ametek Lamb product?
Yes, it’s a genuine Ametek Lamb fan with part number 31213.

2. Will it fit a 7.2" motor from another brand?
It’s designed specifically for Ametek Lamb 7.2” motors. Cross-brand compatibility is not guaranteed.

3. What’s the difference between 330/334?
330 and 334 refer to the rotating fan configuration. This fan fits both types used in Ametek’s 7.2" motor series.

4. Can I install this myself?
Yes, if you're comfortable working with electric motors. Otherwise, consult a technician.

5. Is the fan balanced for high RPM use?
Absolutely. It is precision-balanced for quiet and efficient operation.

6. What materials is the fan made from?
High-grade aluminum – lightweight and corrosion-resistant.

7. Does this come with mounting hardware?
No. It’s a direct replacement part; reuse your existing hardware.

8. How long does it take to ship?
We ship within 1–2 business days across the USA.

9. Can I use it in a central vacuum system?
Yes, it’s commonly used in central vacuum motors.

10. Is it made in the USA?
Yes, manufactured by Ametek in the United States.

11. Do you offer bulk pricing?
Yes! Contact us for volume discounts for service centers and resellers.

12. What tools do I need for installation?
A screwdriver set, motor puller (if needed), and safety gear.

13. Is this the same as part #31213-00?
Yes, 31213 and 31213-00 refer to the same part.

14. Will this improve my motor’s performance?
Yes – if your current fan is damaged or unbalanced, this replacement will restore airflow and efficiency.

Ace Vacuums Locations:

• Fairfax, VA: 11110 Main Street, Fairfax, VA 22030
• Leesburg, VA: 300 Fort Evans Rd NE, Leesburg, VA 20176

Driving Directions to Ace Vacuums in Fairfax, VA (11110 Main Street, Fairfax, VA 22030)

From Maryland (e.g., Bethesda, Silver Spring, Rockville):

1. Start on I-495 S (Capital Beltway Inner Loop): Head south on I-495 towards Northern Virginia.
2. Take Exit 45 A-B for VA-267 W (Dulles Toll Road): Follow signs for VA-267 West (Dulles Toll Road). Be aware this is a toll road.
3. Continue on VA-267 W: Stay on the Dulles Toll Road for several miles.
4. Take Exit 16 for VA-7 E (Leesburg Pike) / VA-123 S (Chain Bridge Rd): Follow signs for VA-123 South (Chain Bridge Rd).
5. Merge onto VA-123 S (Chain Bridge Rd): Continue south on Chain Bridge Road.
6. Turn Right onto Main Street (VA-236 W): This will be a significant intersection. You'll continue on Main Street for a short distance.
7. Ace Vacuums Fairfax: Ace Vacuums will be on your left side, directly opposite Havertys Furniture Store. Look for their prominent signage.

From Washington D.C. (e.g., Downtown D.C.):

1. Take I-66 W toward Vienna/Centreville/Fairfax: Get onto I-66 West.
2. Take Exit 60 for VA-123 S (Chain Bridge Rd) toward Fairfax: Follow the exit ramp.
3. Turn Right onto VA-123 S (Chain Bridge Rd): Continue south on Chain Bridge Road.
4. Turn Right onto Main Street (VA-236 W): This will be a significant intersection.
5. Ace Vacuums Fairfax: Ace Vacuums will be on your left side, directly opposite Havertys Furniture Store.

From Northern Virginia (e.g., Arlington, Falls Church, Vienna):

• From Arlington/Falls Church:
  1. Take US-50 W (Arlington Blvd) or VA-236 W (Main Street) directly into Fairfax: Depending on your starting point, either of these roads will lead you directly to Fairfax.
  2. Continue on Main Street (VA-236 W):
  3. Ace Vacuums Fairfax: Ace Vacuums will be on your left side, directly opposite Havertys Furniture Store.
• From Vienna:
  1. Take VA-123 S (Chain Bridge Rd) toward Fairfax: Head south on Chain Bridge Road.
  2. Turn Right onto Main Street (VA-236 W):
  3. Ace Vacuums Fairfax: Ace Vacuums will be on your left side, directly opposite Havertys Furniture Store.
• From Areas West/Northwest of Fairfax (e.g., Chantilly, Centreville):
  1. Take US-50 E or I-66 E towards Fairfax.
  2. If on I-66 E, take Exit 60 for VA-123 S (Chain Bridge Rd). Turn left onto Chain Bridge Rd, then right onto Main Street.
  3. If on US-50 E, turn right onto Main Street (VA-236 E) in Fairfax.
  4. Ace Vacuums Fairfax: Ace Vacuums will be on your right side if coming from US-50 E/VA-236 E, shortly after crossing VA-123. Look for Havertys Furniture Store on your left.

Driving Directions to Ace Vacuums in Leesburg, VA (300 Fort Evans Rd NE, Leesburg, VA 20176)

From Maryland (e.g., Bethesda, Silver Spring, Rockville):

1. Start on I-495 S (Capital Beltway Inner Loop): Head south on I-495 towards Northern Virginia.
2. Take Exit 45 A-B for VA-267 W (Dulles Toll Road): Follow signs for VA-267 West (Dulles Toll Road). Be aware this is a toll road.
3. Continue on VA-267 W (Dulles Toll Road/Dulles Greenway): Stay on VA-267 West. This road transitions from the Dulles Toll Road to the Dulles Greenway as you head further west into Loudoun County. Tolls apply for both sections.
4. Take Exit 1A for VA-7 W (Harry Byrd Hwy) toward Leesburg: This is a major exit.
5. Continue on VA-7 W: You'll drive for several miles, passing through Sterling and Ashburn.
6. Take the Exit for Battlefield Parkway / Fort Evans Road: As you approach Leesburg, look for this exit.
7. Turn Right onto Fort Evans Rd NE: After exiting, turn right onto Fort Evans Road NE.
8. Ace Vacuums Leesburg: Ace Vacuums will be on your right side, located next to the Home Depot, and directly across from the Leesburg Premium Outlets.

From Washington D.C. (e.g., Downtown D.C.):

1. Take I-66 W toward Vienna/Centreville: Get onto I-66 West.
2. Merge onto VA-267 W (Dulles Toll Road): Follow signs for VA-267 West (Dulles Toll Road). Tolls apply.
3. Continue onto VA-267 W (Dulles Greenway): Stay on the Dulles Greenway. Tolls apply.
4. Take Exit 1A for VA-7 W (Harry Byrd Hwy) toward Leesburg:
5. Continue on VA-7 W:
6. Take the Exit for Battlefield Parkway / Fort Evans Road:
7. Turn Right onto Fort Evans Rd NE:
8. Ace Vacuums Leesburg: Ace Vacuums will be on your right side, located next to the Home Depot, and directly across from the Leesburg Premium Outlets.

From Northern Virginia (e.g., Fairfax, Arlington, Ashburn, Sterling):

• From Fairfax:
  1. Take VA-123 N (Chain Bridge Rd) to access VA-267 W (Dulles Toll Road) or take I-66 W to VA-267 W: Your best bet is to get onto VA-267 West (Dulles Toll Road).
  2. Continue on VA-267 W (Dulles Toll Road/Dulles Greenway): Tolls apply.
  3. Take Exit 1A for VA-7 W (Harry Byrd Hwy) toward Leesburg:
  4. Continue on VA-7 W:
  5. Take the Exit for Battlefield Parkway / Fort Evans Road:
  6. Turn Right onto Fort Evans Rd NE:
  7. Ace Vacuums Leesburg: Ace Vacuums will be on your right side, located next to the Home Depot, and directly across from the Leesburg Premium Outlets.
• From Ashburn / Sterling / Eastern Loudoun County:
  1. Take VA-7 W (Harry Byrd Hwy) directly toward Leesburg: This is the most direct route.
  2. Take the Exit for Battlefield Parkway / Fort Evans Road:
  3. Turn Right onto Fort Evans Rd NE:
  4. Ace Vacuums Leesburg: Ace Vacuums will be on your right side, located next to the Home Depot, and directly across from the Leesburg Premium Outlets.
• From Western Virginia (e.g., Winchester):
  1. Take US-7 E (Harry Byrd Hwy) toward Leesburg:
  2. In Leesburg, after passing the Leesburg Premium Outlets on your left, prepare for the Fort Evans Road / Battlefield Parkway exit.
  3. Take the Exit for Fort Evans Road / Battlefield Parkway.
  4. Turn Left onto Fort Evans Rd NE: You'll go over VA-7.
  5. Ace Vacuums Leesburg: Ace Vacuums will be on your right side, located next to the Home Depot.

Shipping Policy

Return Policy

Ace Vacuums is not responsible for any defective items or shortages in shipments not reported to us within seven days from the time of delivery. All returned items will be inspected for usage, damage, or missing parts from the original package to determine the restocking fee. When you buy a product and find that it is not what you need, you can exchange it within 30 days with the original packaging unused or return your purchase within seven days for a full refund unused from the day the item was delivered. A restocking fee may be applied of up to 50% for used goods. All goods purchased at a discounted price, including trade-ins, holiday sales, or price-match, are considered FINAL SALE goods and therefore are NOT eligible for return. ​No Returns on Air Purifiers. No Cash Refunds.