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Cotton roving and drafting bottom roller

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Cotton roving and drafting bottom roller

The drafting lower roller of the cotton spinning frame produced by our company is made of famous brand No. 45 special high-quality carbon structural steel and advanced and unique processing technology, refined by modern special production equipment and high-precision processing center.

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The drafting lower roller of the cotton spinning frame produced by our company is made of famous brand No. 45 special high-quality carbon structural steel and advanced and unique processing technology, refined by modern special production equipment and high-precision processing center. The working surface is herringbone oblique densely toothed grooves and diamond mesh knurled. After high-frequency heat treatment, hard chrome plating and special polishing, the surface is smooth, burr-free, high-precision, rust-free, wear-resistant, and has a long service life. , And has the advantages of no hanging flowers, stable operation without moving, minimal bending deformation, stable holding force, ensuring effective control of fibers, and minimizing harmful roller mechanical waves that often occur when spinning high-count cotton yarns. It can significantly improve the quality of yarn evenness, reduce apron loss, and is suitable for heavy-pressure drafting.

Technical parameters of cotton roving:

Host model	Main technical parameters of Roller					Remarks
Host model	diameter	Spindle pitch	Number of spindles	chrome	Equipped with bearings	Remarks
FA415	φ28 φ25	110	4	chrome	LZ3224 LZ2822	Groove teeth are arc Knurled teeth are coarse teeth
FA415	φ28.5	110	4	chrome	LZ3224	Groove teeth are arc Knurled teeth are coarse teeth
FA416	φ28 φ25	97	4	chrome	LZ3224 LZ2822	Groove teeth are arc Knurled teeth are coarse teeth
ASFA411 HY491 FA492	φ28.5	97	4	chrome	LZ3224	Groove teeth are arc Knurled teeth are coarse teeth
FA422 FA496	φ28.5	110	4	chrome	LZ3224	Groove teeth are arc Knurled teeth are coarse teeth
FA421	φ28.5	110	4	chrome	LZ3224	Groove teeth are arc Knurled teeth are coarse teeth
FA454 FA456	φ28 φ25	90	4	chrome	LZ3224 LZ2822	Groove teeth are arc Knurled teeth are coarse teeth
A453F	φ28		4	chrome	LZ3224	Groove teeth are arc Knurled teeth are coarse teeth
FA401 FA491 TJFA458	φ28 φ25	108	4	chrome	LZ3224 LZ2822	Groove teeth are arc Knurled teeth are coarse teeth
Foreign models Domestic transformation	Come to technical drawing or come to real sample to measure

Features of a new generation of super high-precision compact spinning roller without mechanical wave:

1. The flexural strength is increased by more than 9.1% compared with conventional rollers.

2. The static runout of any two rollers inlaid is 100% within 0.05mm, and no gasket is needed for installation on the machine.

3. Connect and tighten directly on the machine, without calibration, 98% of the dynamic runout is within 0.02mm, and the maximum does not exceed 0.03mm.

4. The roller has a non-mechanical wave rate of more than 98%, and more than 98% of the mechanical wave-drawn net is flat wave amplitude, and the maximum is not more than 3mm.

5. The yarn evenness of conventional spinning varieties is better than the 5% level of the 2007 Uster Bulletin.

6. Long-term use without walking, stable operation and good consistency.

Keyword:

roving

teeth

chrome

arc

knurled

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