Design Patent No.: ZL 2009 3 0142651.4
Software Copyright Registration No.: 2006 SR01542
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A sewing machine brushless servo motor solution designed specifically for garment factories, leather goods, and luggage workshops - delivering 800W of high torque while consuming 75% less electricity than traditional clutch motors. Runs quietly for 8-hour continuous shifts without fatigue, and powers through heavy materials without stalling. Cut your monthly electricity bill by three-quarters. Handles light fabrics, heavy leather, and multi-layer denim with ease. Optional precision needle positioning ensures accurate alignment on thick materials.
Echnical Specifications
| Parameter | QLS-22-800D Standard | Conventional Motor (Reference) | Advantage |
| Rated Power | 800W Brushless Servo | 750W Clutch Motor | Higher torque at same power |
| Energy Saving | 75% less consumption(200W / ~200W actual) | ~800W | Saves ¥2000+ per unit annually |
| Motor Type | Brushless DC Servo / All-copper core | Brushed/AC Clutch | Carbon-brush free, longer lifespan |
| Torque | High torque (heavy-duty tuned) | Standard torque | Smooth through multi-layer leather/denim |
| Needle Positioning | ±1°(Optional) | None or mechanical | Precise alignment on heavy materials |
| Noise Level | ≤65dB(Comfortable for 8h) | ≥80dB(Fatiguing over time) | Workshop-friendly |
| Housing Material | Reinforced aluminum base + silver-gray metal housing | Cast iron or thin aluminum | Better heat dissipation, warp-resistant |
| Control | Separate control box(【Speed】,【Derate Direction】,【Mode】 3 buttons + digital display) | Knob or lever | Intuitive operation |
| Compatibility | Fits lockstitch, overlock, post-bed, and synchronizer machines | Mostly single-model | Versatile, simplified spare parts |
Four Core Advantages
1.Save 75% Electricity - Recoup Your Investment in Half a Year
Conventional clutch motors waste electricity during idling. Our brushless servo technology delivers power on demand with near-zero standby consumption. Based on 10 units, 10 hours/day, and ¥1/kWh industrial rate: conventional motors cost ~¥29,200/year in electricity, while T-800W costs only ~¥7,300/year - saving ¥21,900 annually. Your investment pays back in as little as six months.
2.High Torque - No Stalling, Light to Heavy
Torque curve is specifically tuned for leather, canvas, multi-layer denim, and heavy luggage materials. Starts strong and runs smoothly - no skipped stitches or broken needles even on thick stacks. Compared to conventional motors, sewing speed and efficiency increase by 20%, significantly boosting daily output per station.
3.Precision Needle Positioning (Optional) - Accurate Alignment on Heavy Materials
Optional high-precision Hall sensor + closed-loop control module locks the needle at the preset position (up/down) every stop, regardless of material thickness. Eliminates manual hand-wheel fine-tuning during cornering, tacking, and pocket alignment - easier operation and lower rework rates. (Note: This function requires additional purchase of the needle positioning kit.)
4.All-Copper Core + Aluminum Housing - Built to Last
All-copper windings offer high conductivity and rapid heat dissipation - no demagnetization or burnout even under prolonged heavy loads. The reinforced aluminum base is die-cast in one piece, vibration-resistant and corrosion-proof, maintaining its shape after years of heavy-duty workshop use. The separate control box mounts flexibly under or beside the worktable to save space. With just three physical buttons - 【Speed】, 【Rotate Direction】, 【Mode】 - and a clear digital display, workers can operate it instantly with zero training.
Powermax Sewing Machine Motor Parameters
| Model | Voltage(V) | Current(A) | Frequency(Hz) | Speed( RPM) | Power(W) | G.W/N.W(kg) |
| QLS-22-550D | AC 220V±20% | 0-3.5 | 50/60 | 0-4200 | 550W | 5.5/5 |
| QLS-11-550D | AC 110V±20% | 0-7 | 50/60 | 0-4200 | 550W | 5.5/5 |
| QLS-22-800D | AC 220V±20% | 0-4.5 | 50/60 | 0-4200 | 800W | 6/5.5 |
| QLS-11-800D | AC 110V±20% | 0-9 | 50/60 | 0-4200 | 800W | 6/5.5 |
| QLS-22-1500D | AC 220V±20% | 0-9 | 50/60 | 0-2500 | 1500W | 7.5/7 |
Applications & Target Customers
| Target Customer | Application | Key Benefit |
| Garment Factories | Lockstitch, overlock, template sewing | Drastically lower electricity, quieter workshop, better worker retention |
| Leather Goods & Luggage Factories | Post-bed sewing of heavy leather, multi-layer canvas | High torque for smooth sewing, optional precision stop |
| Automotive Interior Manufacturers | Seat covers, headliners, floor mats | Stable under prolonged heavy loads, low failure rate |
| Independent Tailors / Sample Studios | Frequent style changes, small batches | Separate control box for easy adjustment, one-touch switch between light/heavy |
| Schools / Training Institutions | Upgrading teaching machines | Low noise won't disrupt classes, intuitive for students |
| Equipment Distributors | Complete machine integration or replacement parts market | Strong compatibility, fast inventory turnover |
Sewing Machine Power Saver Motor Details
Quality Assurance & Delivery Commitment
Warranty: 1-year warranty on the complete unit (motor body and controller) - free repair or replacement for non-human-damage failures.
Delivery Lead Time: 5-25 working days after deposit confirmation (exact timeline depends on order quantity and current production schedule).
Technical Support: Illustrated installation manuals and wiring diagrams provided in both Chinese and English; remote guidance available for installation questions.
Customization: Control box panel labeling can be customized per client requirements (contact sales for details).
FAQ
Q: What is the MOQ? Can we purchase a small quantity for testing first?
A: MOQ is 100 units per order. We do not offer retail or sample testing. We recommend evaluating based on our detailed specifications and product photos before placing a bulk order. For special requests, please contact our sales team.
Q: What is the speed range?
A: The speed range is 0-4200 RPM (revolutions per minute), with stepless smooth adjustment. It can be freely set via the 【Speed】 button on the control box, accommodating different working conditions from high-speed light fabric sewing to low-speed high-torque heavy material sewing.
Q: Is the "75% energy saving" a lab figure or real-world data?
A: The 75% saving is based on side-by-side power consumption tests under identical working conditions (conventional clutch motor ~800W vs. T-800W ~200W). Actual savings may vary slightly depending on sewing speed and material thickness, but the vast majority of customers report savings in the 65%-80% range.
Q: Does it really not stall when sewing heavy materials? What is the maximum thickness?
A: We have specifically optimized low-speed torque output for heavy materials. In actual tests, 12 layers of standard denim and 6mm thick vegetable-tanned leather can be sewn smoothly (with appropriate needles and presser feet).
Q: Is precision needle positioning standard? How can we add it?
A: Precision needle positioning is an optional feature and is not included in the standard configuration. If you require this function, please specify it in your inquiry, and we will provide a quotation that includes the needle positioning control kit.
Q: Are the buttons on the separate control box complicated to use? Do workers need special training?
A: Not at all. The panel features just three core buttons - 【Speed】, 【Rotate Direction】, 【Mode】 - with a digital display showing current RPM. New workers can master it in under one minute. (Note: Precision needle positioning is optional; if purchased, the control box will include the corresponding interface without affecting the basic button layout.)
Q: Why does the delivery lead time range from 5 to 25 days?
A: The exact lead time depends on order quantity and current production scheduling. Please confirm the available production slot with our sales team before placing your order, and we will provide a confirmed delivery date.
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