Ametek Lamb Motor Rotating Fan 114-787 Part #31281
- Product SKU: 31281
- Category: Ametek vacuum parts
- Order within
Product Introduction
Ametek Lamb Motor Rotating Fan (Part #31281) – A premium-quality, US-made rotating impeller engineered to enhance performance and durability in Ametek/Lamb vacuum and blower motors (notably compatible with 114‑787) across commercial, industrial, and residential applications.
Key Features Overview
-
Precision-Balanced Design – 6.75″ OD impeller ensures smooth, vibration-free airflow
-
Heavy-Duty Construction – Built in the USA by Ametek Lamb, a leader since 1930
-
Universal Fit – Perfect match for Ametek motors like model 114‑787 and equivalents
-
Enhanced Airflow Efficiency – Optimized impeller design for stable vacuum and airflow
-
Dependable Balance – Each fan dynamically balanced for vibration reduction and longevity
What Makes This Model Stand Out
-
OEM-grade precision ensures peak motor efficiency and lifespan.
-
Made in the USA under Ametek Lamb’s strict quality controls – peace of mind for buyers.
-
Multi-industry usability – from commercial vacuums to HVAC blowers and central vacuum systems.
-
Reliable availability – stocked by multiple national suppliers, with easy reorder options.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 31281 |
| Function | Rotating impeller fan assembly |
| Diameter (OD) | 6.75 in (171 mm) |
| Compatibility | Ametek Lamb 114‑787, 7.5″ diameter, 3‑stage vacuum/blower motors |
| Balance | Factory-balanced for optimal performance |
| Origin | USA (Ametek Lamb) |
Ideal Buyers – Who Should Buy It?
-
Service technicians & HVAC professionals needing OEM replacement parts
-
Facility managers overseeing vacuum systems or industrial blowers
-
Central-vac system installers & repair services
-
Distributors & retailers stocking genuine Ametek Lamb replacements
-
DIY enthusiasts maintaining home vacuum or blower equipment
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
| Feature | Fan 31281 | Generic Off‑Brand Fan | OEM 31281 from RS‑Online |
|---|---|---|---|
| Balance | Precision-balanced | Often unbalanced | Factory-balanced |
| Material | Durable, precision-molded | Lower-grade plastic | OEM-grade material |
| Fit | Exact OEM spec | May require modification | Exact OEM spec |
| Manufacturer Warranty | Yes | Rare or none | Yes |
| Usage Reliability | High | Often inconsistent | High |
Pros and Cons
✅ Pros:
-
OEM quality ensures proper fit and peak motor performance
-
Industry-tested and trustworthy
-
Smooth, vibration-free operation prolongs motor life
-
Wide availability and fast shipping options
❌ Cons:
-
Slightly more expensive than generic fans
-
Bulk orders may have delayed lead times
-
Requires correct fit verification for non‑114‑787 motors
Product Introduction
Ametek Lamb Motor Rotating Fan (Part #31281) – A premium-quality, US-made rotating impeller engineered to enhance performance and durability in Ametek/Lamb vacuum and blower motors (notably compatible with 114‑787) across commercial, industrial, and residential applications.
Key Features Overview
-
Precision-Balanced Design – 6.75″ OD impeller ensures smooth, vibration-free airflow
-
Heavy-Duty Construction – Built in the USA by Ametek Lamb, a leader since 1930
-
Universal Fit – Perfect match for Ametek motors like model 114‑787 and equivalents
-
Enhanced Airflow Efficiency – Optimized impeller design for stable vacuum and airflow
-
Dependable Balance – Each fan dynamically balanced for vibration reduction and longevity
What Makes This Model Stand Out
-
OEM-grade precision ensures peak motor efficiency and lifespan.
-
Made in the USA under Ametek Lamb’s strict quality controls – peace of mind for buyers.
-
Multi-industry usability – from commercial vacuums to HVAC blowers and central vacuum systems.
-
Reliable availability – stocked by multiple national suppliers, with easy reorder options.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 31281 |
| Function | Rotating impeller fan assembly |
| Diameter (OD) | 6.75 in (171 mm) |
| Compatibility | Ametek Lamb 114‑787, 7.5″ diameter, 3‑stage vacuum/blower motors |
| Balance | Factory-balanced for optimal performance |
| Origin | USA (Ametek Lamb) |
Ideal Buyers – Who Should Buy It?
-
Service technicians & HVAC professionals needing OEM replacement parts
-
Facility managers overseeing vacuum systems or industrial blowers
-
Central-vac system installers & repair services
-
Distributors & retailers stocking genuine Ametek Lamb replacements
-
DIY enthusiasts maintaining home vacuum or blower equipment
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
| Feature | Fan 31281 | Generic Off‑Brand Fan | OEM 31281 from RS‑Online |
|---|---|---|---|
| Balance | Precision-balanced | Often unbalanced | Factory-balanced |
| Material | Durable, precision-molded | Lower-grade plastic | OEM-grade material |
| Fit | Exact OEM spec | May require modification | Exact OEM spec |
| Manufacturer Warranty | Yes | Rare or none | Yes |
| Usage Reliability | High | Often inconsistent | High |
Pros and Cons
✅ Pros:
-
OEM quality ensures proper fit and peak motor performance
-
Industry-tested and trustworthy
-
Smooth, vibration-free operation prolongs motor life
-
Wide availability and fast shipping options
❌ Cons:
-
Slightly more expensive than generic fans
-
Bulk orders may have delayed lead times
-
Requires correct fit verification for non‑114‑787 motors
Frequently Asked Questions
-
Is this fan compatible with the Ametek 114‑787 motor?
Yes – it’s the original rotating impeller specified for the 114‑787 model. -
Can I use this for central vacuum systems?
Absolutely – designed for commercial canister and central-vac applications. -
What is the fan diameter?
It measures 6.75 inches outside diameter. -
Does it come balanced?
Yes, each unit is factory-balanced to reduce vibration. -
Made in USA?
Yes – manufactured by Lamb Electric, part of Ametek, located in the USA. -
Shipping options?
FedEx across the USA; in‑store pickup may be available via retailers like AllBrands. -
Is there a warranty?
OEM replacements generally come with manufacturer or vendor warranty. -
Are bulk discounts available?
Yes – vendors like RS‑Online offer lower unit pricing for larger orders. -
Does it include mounting hardware?
No – this is fan impeller only; mounting lugs/hardware sold separately. -
Works with 50 Hz and 60 Hz systems?
Yes – compatible with both frequencies. -
Vibration noticeable after replacement?
No – proper replacement eliminates vibration due to precise balancing. -
Any required alignment?
Simply install per Ametek guidelines; no additional balancing needed. -
Can I clean and reuse it?
Generally not recommended — cleaning can disturb balance. -
Is this the same as part 14786/14787?
Yes, 31281 is cross-referenced with these impeller models. -
What materials is the fan made of?
High-strength, molded material designed to withstand heat and stress. -
Weight of the fan?
Lightweight; designed not to overload the motor shaft. -
Temperature limits?
Intended for standard operating ranges (keep ambient under ~104 °F per motor specs) . -
Where can I get brushes/gaskets?
Vendors offer brushes (e.g., part 35253) and gaskets (e.g., 010‑305455) compatible with 114‑787. -
Is replacement difficult?
No – it’s a straightforward swap: remove the old fan, install 31281, ensure secure fit, then run motor per service guide.
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Shipping, Return & Refund FAQs
Helpful Policy & Support Links
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