G 133 BD Rotor Complete
G · Medium–Fine
G Groove rotor with BD boronized coating for 100% cotton and cotton-dominant blends (Ne 16–40) on Autocoro 240 / 288 series. 100% dynamic-balanced. Custom profiles available from our in-house production line.
G — Medium to fine count cotton
BD Boronized
SE7 · SE8 (Autocoro 240 / 288)
Series 1
G 133 BD — Complete Specifications
All measurements in millimetres. Each rotor undergoes 100% dynamic balance testing before shipment.
Why G Groove for Your Yarn Count Target
The G Groove is engineered for 100% cotton and cotton-dominant blends.
G Groove — Applicable Yarn Count Range
For coarse counts (Ne 3–16), consider the GT groove.
G Groove coverage (Ne 16–40)
G Groove — Precision Fibre Control for Target Yarn
The G Groove geometry creates a controlled deposition zone inside the rotor, ensuring 100% cotton and cotton-dominant blends are uniformly distributed and twisted. This translates to higher yarn evenness (lower CV%) and fewer thin/thick places — critical for target count production.
Optimized for Ne 16–40
The G Groove’s geometry is calibrated for 100% cotton and cotton-dominant blends, delivering stable fibre separation and consistent yarn formation across the full Ne 16–40 (medium to fine) 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 G 133 BD?
Bearing Series 1 rotors fit SE7 / SE8 generation Autocoro machines (Autocoro 240 / 288). Other generations require different spec numbers.
What to Spin with G 133 BD
Based on field data from spinning mills worldwide using SE7/SE8 machines.
✓ Ne 30–40 fine count combed cotton
✓ Single jersey & interlock knitting yarns
✓ Shirting & poplin weaving yarns
✓ Cotton hosiery yarns
◇ PC blends (polyester/cotton, medium counts)
◇ Regenerated cotton blends
◇ Cotton-rich mélange yarns
→ 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 533 BD →
Order G 133 BD Rotors
Pre-filled: G 133 BD · Schlafhorst Autocoro SE7/SE8 · BD Boronized
Tell us your quantity and we’ll respond with pricing and lead time within 24 hours. Sample orders welcome.