7.ADJUSTMENT <Y-GT belt>

Measurement position

5214Q

1.Move the X feed bracket (1) so that it is in the middle of the sewing area in the Y direction and at the left edge of the sewing area in the X direction.

2.Loosen the two bolts (3) of the Y-pulley bracket (2), and then provisionally tighten them at 19.6 mN·m.

3.Pass the M5x25 screw through the countersunk hole in the side of the bed and screw it into the tap hold in the Y-pulley bracket (2). Then adjust the belt tension to 160 – 240 N.

4.Tighten the two bolts (3), and then remove the M5x25 screw.

5.Measure the belt tension once more and check that it is 400 – 480 N.

*Be sure to use a belt tension gauge to measure the belt tension, and measure from the bottom of the belt.

*The belt tension gauge should be set to measure a unit weight of 0.04 kg/m, a belt width of 30 mm and a span length of 370 mm.

*The recommended belt tension gauge to use is the Dr. TENSION TYPE-ll manufactured by MITSUBOSHI BELTING LTD.

7-18. Adjusting the tension release amount

5156Q

4689Q

 

1.Loosen the nut (4) and turn the bolt (2) to adjust so that the distance between the tip of the bolt (2) and the solenoid setting plate (3) is 16.5 mm when the plunger of the tension release solenoid (1) is pushed in as far as it will go.

2.Check that the tension disc opening amount is 1.0 - 1.5 mm when the tension release solenoid (1) is installed to the arm and the plunger is pushed with a screwdriver or similar tool through the hole in the solenoid cover.

*If memory switch No. 552 has been set so that the tension release timing is early, you can increase the trailing length for the upper thread.

102

BAS-311G, BAS-326G

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Brother BAS-311G service manual Adjusting the tension release amount, 102, Adjustment Y-GT belt

BAS-311G specifications

The Brother BAS-311G is a state-of-the-art industrial sewing machine designed specifically for advanced garment manufacturing. This high-speed, fully automated model is engineered to meet the demands of modern production environments, offering exceptional performance and versatility.

One of the key features of the BAS-311G is its automatic thread trimmer, which significantly reduces downtime and enhances productivity. This machine is capable of cutting the thread at the end of each seam, ensuring a clean finish and minimizing the need for manual intervention. This feature is especially beneficial in high-volume production settings where efficiency is paramount.

The BAS-311G also boasts an advanced automatic needle positioning system, allowing users to set the needle to stop in the up or down position. This functionality enhances control over the sewing process, making it easier to pivot and maneuver fabric, which is crucial for intricate designs and patterns. This precision is a boon for manufacturers looking to improve the quality of their finished products.

Another notable aspect of the BAS-311G is its versatility. The machine is equipped with an adjustable stitch length feature, enabling users to customize stitches according to specific project needs. This flexibility allows for the production of a wide range of garments, from delicate fabrics to thicker materials, making it suitable for various industries including fashion, sportswear, and workwear.

In terms of technology, the BAS-311G incorporates Brother's pioneering technology that ensures smooth and reliable operation. The machine includes a digital control panel, which simplifies the selection of stitch patterns and settings. Users can easily navigate through options, making adjustments on the fly, which is crucial in a fast-paced production environment.

Built with durability in mind, the BAS-311G is engineered for heavy-duty use with high-quality materials that withstand the rigors of daily operation. Its robust construction ensures longevity and sustained performance, making it a wise investment for businesses seeking reliable machinery.

In summary, the Brother BAS-311G is an excellent choice for manufacturers looking to enhance their sewing operations. With features such as automatic thread trimming, adjustable stitch lengths, and advanced technology integration, it stands out as a top-tier industrial sewing machine designed to improve efficiency and quality in garment production.