TT 540 BD Rotor Complete
TT extra-narrow groove rotor with BD boronized coating for fine count yarns (Ne 16–40) on Autocoro 360 / ACO 480 series. 100% dynamic-balanced. Custom profiles available from our in-house production line.
TT 540 BD — Complete Specifications
All measurements in millimetres. Each rotor undergoes 100% dynamic balance testing before shipment.
Why TT Groove for Extra-Fine Yarn
The TT extra-narrow groove is the finest profile for high-density yarn formation in the Ne 16–40 range.
TT Groove — Applicable Yarn Count Range
Optimized for fine counts. For coarse counts (Ne 3–16), consider the GT groove.
TT Groove — Maximum Fibre Control for Extra-Fine Yarn
The TT extra-narrow groove geometry creates a highly compact deposition zone, ensuring maximum fibre control and twist efficiency at fine counts. This translates to superior yarn evenness (lower CV%) and fewer thin/thick places — critical for demanding fine count applications.
Optimized for Ne 16–40
The TT groove’s extra-narrow geometry is calibrated for fine counts, delivering stable fibre separation and consistent yarn formation across the full Ne 16–40 range.
Consistent Yarn Evenness
Stable fibre deposition zone produces CV% values consistently below Uster 25% benchmarks, critical for downstream knitting and weaving quality.
Reduced End Breakage
Optimized twist propagation path reduces spinning tension peaks, lowering end-break rates and improving machine efficiency on SE11/SE12 platforms.
Self-Cleaning Geometry
The groove’s parabolic cross-section prevents micro-dust accumulation — a root cause of periodic faults and moiré patterns in long-run production.
BD Boronized vs. DN Diamond Coating
Both coatings available from our in-house treatment line. Choose based on fibre type and speed requirements.
Thermochemical diffusion process forms a hard boride layer (FeB/Fe₂B) on the substrate. Excellent wear resistance at a competitive price. Ideal for standard cotton production where cost-per-kg is the priority.
CVD diamond-like carbon coating delivering extreme surface hardness. Recommended for abrasive fibres (recycled cotton, coloured cotton, viscose blends), high-speed production, and mills targeting maximum uptime and longest service intervals.
Which Schlafhorst Machines Use TT 540 BD?
Bearing Series 5 rotors fit SE11 and SE12 generation Autocoro machines. Other generations require different spec numbers.
What to Spin with TT 540 BD
Based on field data from spinning mills worldwide using SE11/SE12 machines.
✓ Fine viscose & modal yarns
✓ Compact & fine knitting yarns
✓ Fine shirting & poplin
✓ High-tenacity fine yarns
◇ Fine PC blends
◇ Mélange fine yarns
◇ Regenerated fine cotton
→ S groove: Medium to fine blends (Ne 16–40)
→ T groove: Medium to fine (Ne 16–40)
→ K groove: Fine counts only (Ne 30–40)
→ See T 540 BD →
Order TT 540 BD Rotors
Pre-filled: TT 540 BD · Schlafhorst Autocoro SE11/SE12 · BD Boronized
Tell us your quantity and we’ll respond with pricing and lead time within 24 hours. Sample orders welcome.