Mastercraft 335711 1HP Motor for SootVac
Product Overview
The Mastercraft 335711 is a 1HP replacement motor for SootVac soot vacuum systems, including models 641M and 652M. Designed for high-speed, two-stage vacuum operation, this AMETEK LAMB motor delivers powerful suction, reliable performance, and quiet operation. Its thru-flow discharge design efficiently cools the motor using the vacuumed air itself, eliminating the need for a separate fan.
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Replacement for Mastercraft/Sootmaster Part 350699
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Designed for clean, dry air applications in soot vacuums, utility vacuums, sprayers, foggers, and material handling systems
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High starting torque with single-speed operation
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Durable metal mounting brackets and compact 5.7” body diameter
This motor ensures long-lasting performance and is ideal for commercial or residential vacuum applications requiring powerful airflow and efficient cooling.
✅ Key Features
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✔️ 1HP, 120V, 60Hz AC motor
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✔️ AMETEK LAMB brand motor for high reliability
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✔️ Two-stage thru-flow discharge for quiet, efficient cooling
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✔️ High starting torque and high-speed operation
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✔️ Maximum airflow: 95 CFM
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✔️ Single-speed design
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✔️ Open drip-proof motor enclosure
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✔️ Metal mounting brackets for secure installation
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✔️ Compact 5.7-inch diameter body
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✔️ Replaces Mastercraft/Sootmaster part 350699
🔧 Specifications
| Specification | Details |
|---|
| Model |
335711 |
| Motor Brand |
AMETEK LAMB |
| Part Number |
116311-001 |
| Voltage |
120V AC |
| Frequency |
60 Hz |
| Horsepower |
1 HP |
| Stages |
2-Stage |
| Speed |
Single-speed |
| RPM |
23,240 |
| Max Airflow |
95 CFM |
| Motor Enclosure |
Open Drip Proof |
| Thermal Protection |
None |
| Full Load Amps |
8.1–8.3 A |
| Duty Cycle |
Intermittent |
| Max Ambient Temp |
40°C (104°F) |
| Discharge Design |
Thru-Flow |
| Body Diameter |
5.7 in |
| Mounting |
Metal brackets |
🔄 Cross Reference
| Old Part Number | New Part Number | Brand |
|---|
| 350699 |
335711 |
Mastercraft/Sootmaster |
⚠️ Common Symptoms of a Failing Motor
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Reduced suction or airflow
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Motor fails to start
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Excessive noise or vibration
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Overheating during operation
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Intermittent operation or tripping circuits
❓ Frequently Asked Questions (FAQ)
Q: What SootVac models is this compatible with?
A: Works with 641M and 652M soot vacuum models.
Q: Does this motor have thermal protection?
A: No, this motor does not include thermal protection. Ensure proper ambient temperature and clean airflow conditions.
Q: What is the airflow capacity?
A: Maximum airflow is 95 CFM.
Q: Can it be used in wet or dirty environments?
A: No. Thru-flow motors must be used in clean, dry air environments only.
Q: What does “thru-flow discharge” mean?
A: The motor uses the vacuumed air to cool itself, discharging air through the top instead of using a separate fan, resulting in quieter operation.
🛒 Shopping Tips
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Confirm your SootVac model is 641M or 652M before ordering.
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Ensure the motor operates in clean, dry air conditions.
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Intermittent duty rating: avoid continuous operation beyond specifications.
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Replace mounting brackets and hardware if worn to maintain proper alignment.
