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500 r/min Mandrel Rotation Speed PET Strap Semi-auto Winder
Product Overview
The CQ800 semi-automatic PET strap winder features a maximum mandrel rotation speed of 500 r/min, providing ample mechanical capability for high-speed winding. When winding large-diameter packages, the rotation speed automatically decreases as the diameter grows to maintain constant linear speed (up to 250 m/min). The 500 r/min upper limit means the machine can easily handle high-speed production of small-diameter coils or maintain high productivity when the coil diameter is small. The mandrel uses precision bearings and dynamic balancing, ensuring smooth and reliable operation even at sustained 500 r/min. This parameter, together with the 350 m/min pickup speed and 50-250 m/min winding speed, forms the core capability for efficient winding.
Technical Specifications
Parameter
Specification
Model
CQ800
Maximum mandrel rotation speed
500 r/min
Corresponding linear speed (at small diameter)
250 m/min
Bearing type
Precision rolling bearings
Dynamic balancing grade
G6.3
Continuous operation at 500 r/min
Yes
Applicable coil diameter range
From core OD to 820 mm
Drive method
Dual servo motors
Key Features
High rotation speed limit - 500 r/min, suitable for high-speed small-coil production.
Constant linear speed control - Automatically reduces speed as diameter grows, maintaining constant line speed.
Wide speed range - From slow large-coil to fast small-coil, full coverage.
Long-life bearings - Industrial-grade bearings, long maintenance-free intervals.
Enables high pickup speed - 500 r/min makes 350 m/min pickup possible.
Dual servo drive - Fast torque response, high speed accuracy.
Frequently Asked Questions
Is 500 r/min a typical operating speed?
When winding small-diameter coils (e.g., at the initial core diameter of 406 mm), the mandrel needs about 500 r/min to achieve 250 m/min linear speed. This is within the machine's design capability for long-term operation.
Will there be significant vibration at such high speed?
No. The mandrel assembly is dynamically balanced, and the machine frame is rigid. Vibration is minimal at 500 r/min and does not affect winding accuracy.
As the coil diameter increases, the rotation speed drops - does that affect production rate?
No, because linear speed remains constant (e.g., 250 m/min), so the time to wind each meter of strap is unchanged. High rotation speed is only needed when diameter is small, precisely to maintain constant line speed.
Does 500 r/min affect bearing life?
Bearings are selected for the rated speed. 500 r/min is within their design life, and under normal use they will last for years without replacement.
Why is such a high mandrel rotation speed needed?
To achieve a maximum linear speed of 250 m/min with a large core diameter (406 mm), the initial rotation speed must be about 500 r/min (n = v / (π*D)). Without this speed, 250 m/min would be impossible.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2012
Total Annual:
5000000-8000000
Employee Number:
50~60
Ecer Certification:
Verified Supplier
Jiaxing Chuanqi Machinery Equipment Co., Ltd. is a high-tech enterprise that specializied in the research and develop and manufacture of Paper strap production line, PP box strap production line and all kinds of automatic winder and PP PET strapping.
Vision: Committed to becoming t... Jiaxing Chuanqi Machinery Equipment Co., Ltd. is a high-tech enterprise that specializied in the research and develop and manufacture of Paper strap production line, PP box strap production line and all kinds of automatic winder and PP PET strapping.
Vision: Committed to becoming t...