About BRUCE B5 OVERLOCK
The Bruce B5 is a high-speed, fully automatic industrial overlock sewing machine. Engineered for high-volume garment manufacturing, it features a built-in direct-drive servo motor, smart fabric sensors, and automated thread trimming. It is designed to boost production efficiency and eliminate oil contamination in fabrics.
Key Features and Specifications
- Speed & Performance: Reaches a maximum speed of up to \(7000\text{ RPM}\) and accelerates from start to maximum speed in just \(140\text{ ms}\).
- One-Shaft Design: An exclusive coaxial single-shaft drive reduces torque, making operation smoother, more stable, and highly durable.
- Intelligent Sensor Technology: Features wear-resistant, dust-proof sensors that automatically identify the fabric, boosting sewing efficiency by 35% to 100% compared to standard machines.
- Clean Sewing & Oil Control: Utilizes a full-envelope type oil return for the needle bar and special protections for the tooth frame to prevent oil leakage, keeping fabrics free from oil stains.
- Thread & Cost Saving: Reduces thread tails from a traditional \(5\text{ cm}\) to a maximum of \(1\text{ cm}\), saving significant amounts of thread over the course of a year.
- Smart Operation: Includes a one-key reset to return to factory or user-set parameters and features interchangeable modes (full computerized, semi-computerized, and manual).Â
Upgraded Variants (B5KS & B5000)
The Bruce B5 series has expanded into specialized, fully automatic models like the B5KS and B5000. These models include:Â
- Pneumatic Trimmers & Suction: Automatically cuts threads and removes dust/tails to keep the workspace clean.
- Silent Servo Control: Controlled completely by a silent servo motor for thread trimming and presser foot lifting, dropping machine noise to around \(75\text{ dB}\).
- Multi-layer Climbing: Automatically detects and adjusts speed to smoothly glide over thick, layered fabrics
The Bruce B5 series features a maximum sewing thickness of up to \(7\text{ mm}\), making it highly adaptable for handling layers of diverse garment textiles
Material Compatibility
The machine is optimized to transition dynamically through varying material weights:Â
- Lightweight Fabrics: Ideal for mesh, silk, hosiery, and light underwear.
- Mediumweight Fabrics: Handles standard knitwear, cotton shirts, linens, and light jackets.
- Heavyweight Fabrics: Capable of stitching casual denim, fleece hoodies, and active sportswear.Â
Advanced Thick-to-Thin Adaptation
- Multi-layer Climbing: The intelligent control program senses heavy seam intersections or sudden thickness variations. It automatically adjusts speed and torque to smoothly "climb" across seams without needle breakage or skipped stitches.
- Thickness Adjustment Levels: Newer variants in the lineup (such as the B5000) feature quick mechanical leveling (L for light, M for medium, H for heavy). This shifts feed dog timing to accommodate different seasonal garment orders instantly
The Bruce B5 overlock machine features a maximum stitch length of \(3.8\text{ mm}\) and a maximum stitch width of \(6\text{ mm}\). These dimensions can be adjusted to fit different fabric weights.
Stitch Specifications
- Stitch Length: Adjustable from \(0.8\text{ mm}\) to \(3.8\text{ mm}\).
- Stitch Width: Offers standard options of \(4\text{ mm}\), \(5\text{ mm}\), or \(6\text{ mm}\) depending on the needle gauge and specific sub-model (e.g., 3-thread, 4-thread, or 5-thread).
- Differential Feed Ratio: Ranging from \(0.7\) to \(2.0\) to prevent fabric puckering or stretching during wide stitching.
Quick Adjustment Guide
- Changing Stitch Length: Press and hold the push-button on the machine bed while turning the handwheel until the desired length number aligns with the indicator mark.
- Changing Stitch Width: Adjust the position of the overlock knives horizontally using the knife-holder screw to match your required seam allowance