BT 903 and BT 905 two concepts
BT 923 rotor spinning machine
BT 923 - Rotor Spinning Machine
New Concept for Productivity, Ergonomy and Selfguarding
BT 923 - Production
Increased Rotor Speed 110 000 rpm thanks to:
New spinbox concept with
optimised fibre transport
channels
Rotors without holes combined
with central suction system for
technology air
New design of a bearing with
ceramic balls
Increased Delivery Speed 200 m/min thanks to:
new concept of bearing the delivery
shaft
hydraulic shock absorber for bobbin
arms preventing vibration and
winding malformation
pneumatic loop compensation
Production Increase
Example for Ne 10 production:
· BT 923
(320 SBs, 100 000 rpm, 180 m/min)
- 194 kg per hour
· other semiautomated machines
(320 SBs, 90 000 rpm, 160 m/min)
- 174 kg per hour
BT 923 Enhanced Ergonomy
· Lower machine height for easy operation
· Section lay-out to accommodate 18“ cans
· Independent drives
· Two transport belts
· Automatic lifting of bobbin arms
· Dissassembly of spin box
with minimum instruments
· New display
Cost Savings with Large Cans (18 1/2” versus 16”)
BT 923 - Independent Side Drives
Benefits of independent side drives
· Packages with different counts or length or
winding density or material or color can be
produced on each side
· Increased effciency producing small lots
· Reduced running costs by independent
maintenance
BT 923 - Two Transport Belts
· No mixing of bobbins if two
different yarns are produced
on each machine side
· Temporary stock of full
bobbins
· Savings on labour costs
New Spin Box C 120 Components
· New bearing with ceramic balls
· Smaller diameter of the opening
roller (65mm)
· Insert with exchangable caps
· New concept of the feeding clutch
- precising of feeding = advantage
for slub function
· Spin box disassembly without
tools and jigs(except rotor)
New Technology Parts for C 120 Spin Box
Exchangable insert caps
Costs savings for
the change of spinning
specification!
New graphical display
· More data illustration
· Better arrangement of data
· Easier orientation among
functions
BT 923 - Yarn monitoring and selfguarding
New Yarn Quality Sensor - IQplus®
· Optical cleaner with new chip
technology
· Higher resolution
· Higher data reading (20 points per 1 ms, e.g. 10 points per 1 mm of yarn for the delivery 120 m/m i n)
· Better resistance against surrounding light and dust
New Channels
Classification of Faults
BT 923 - new benchmark for semiautomated machine
· Ne 3-40 yarn count range
· 110 000 rpm
· 200 m/min delivery speed
· 320 spinning positions
· AMIspin® for electronically controlled piecing
· IQplus® yarn clearer for yarn quality
· Independent side drives for flexibility
· Rieter slub yarn device for structured yarn
