C536/Tr-D Rotor Complete
Application-specific Tr rotor complete for counts confirmed per order on the Rieter R923 and R35 semi-automatic platform. Diamond-coated working face. T013 bearing rated to 110,000 rpm with a recommended ceiling of ≤ 105,000 rpm — dimensionally identical to the original, at 40–60% below OEM price.
C536/Tr-D — Complete Specifications
All measurements in millimetres. Every rotor complete assembly is 100% dynamically balanced on our own balancing line before shipment.
Why Tr Groove for Application-Specific Spinning
There is no standard count band for the Tr groove in the data we hold. Rather than quote a range the rotor cannot back up, we confirm the count per order. Because the count band is not published, the selection is checked against your fibre and target count before quoting.
Tr Groove — Yarn Count Range
No published count window for this groove. Send your target count and fibre type and we confirm the correct rotor pairing before quoting. Coating grade and count band are confirmed with the quotation for this rotor.
Tr Groove — Application-Specific Geometry
The Tr code sits outside the standard count-band families, so selection is made on the application rather than on a published range. That keeps the risk where it belongs — with our engineers, ahead of the order, not with your production floor afterwards. We would rather confirm the pairing than quote from a band the catalogue does not document.
Coating Chosen With the Rotor
The surface coating is confirmed together with the rotor selection, so abrasive fibre and high speeds are planned for.
Defined Bearing Group
The rotor still belongs to a specific bearing group, so machine compatibility is unambiguous.
Quotation Follows the Selection
Lead time and price follow the confirmed selection rather than an assumed one.
Count Matched to Your Application
No fixed band is published, so the rotor is checked against your fibre, target count and spinning position.
What D Means: Base and Working Surface
The trailing letters of the model code are two independent codes, not one word: B is the substrate, D is the working surface. Diamond top layer (HV 1000-1200) with a friction coefficient of 0.05–0.1, which reduces fibre damage at the groove face. Ordering rotors, bearings and opening rollers together keeps freight and coating consistent across the spin box.
B = boronized (boron-steel) substrate. A diamond film is only microns thick, so the steel underneath decides whether it survives: a soft substrate deforms under fibre and grit impact and the film cracks and spalls off. The boronized base is the hardening step that keeps the diamond layer intact. This code does not carry the B step; it is the -BD- variant that pairs the diamond layer with the boronized base.
D = diamond top layer, grown on the prepared substrate as a micron-scale film. It takes the fibre and grit contact directly, which is where the wear resistance, the friction coefficient of 0.05–0.1 and the anti-stick behaviour come from that hold the groove profile over long runs. Diamond coating technology of US origin, applied on JSM’s own treatment line.
Which Rieter Machines Use C536/Tr-D?
This rotor runs the T013 bearing, shared by the Rieter R923 and R35 semi-automatic machines. Models in the group differ by groove and rotor size, not by bearing fit.
What to Spin with C536/Tr-D
How this rotor is applied on Rieter R923 and R35 machines, with the Tr groove’s count window where one is published.
✓ Applications outside the standard published count bands
✓ Mills whose target count needs confirming against the catalogue
✓ Fibre mixes where a cotton groove is uncertain
◇ Standard fine counts Ne 16–40 — T family, published window
◇ Medium–coarse Ne 10–30 — U general-purpose groove
◇ Coarse counts Ne 3–16 — GL groove
→ T: Narrow (Ne 16–40)
→ TT: Extra narrow (Ne 16–40)
→ S: Special (Ne 16–40)
→ U: General purpose (Ne 10–30)
→ GL: Large (Ne 3–16)
→ G: Standard (Ne 16–40)
→ See all 9 Rieter R923 and R35 rotor models →
C536/Tr-D — Frequently Asked Questions
Answers to the questions buyers ask most often about this rotor. If yours is not listed, send it with your machine model and current rotor code — we reply within 24 hours.
Is C536/Tr-D compatible with my Rieter R923 and R35 machine?
What does the model code C536/Tr-D mean?
What yarn counts does the Tr groove suit?
What do the letters BD mean in the model code C536/Tr-D?
How much does an OEM-equivalent rotor save versus the original?
Can I order the rotor spindle or rotor cup separately?
Order C536/Tr-D Rotors
Pre-filled: C536/Tr-D · Rieter R923 / R35 · diamond coating
Tell us your quantity and we respond with pricing, lead time and freight options within 24 hours. Sample orders welcome.
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