Rotor Bearings for Open-End Spinning — 13 Models, up to 120,000 RPM
Precision rotor bearings that center the rotor shaft inside the spin box at up to 120,000 RPM. Dimensionally identical to OEM for Schlafhorst, Rieter, Saurer & Taitan — DN diamond coating, in-house from forging to finish.
More Than a Ball Bearing
A rotor bearing is the precision assembly that supports and centers the rotor shaft inside the spin box — handling speeds up to 120,000 RPM while absorbing intense axial vibration.
An Integrated Positioning System
Unlike a standard industrial bearing, the rotor bearing is a positioning system. Shoulder dimensions L1 and L2 determine exactly how it seats against the housing — 0.5 mm off = bearing seizure.
Two Body Types
JSM manufactures Standard body (Schlafhorst / Rieter) and Segmented body (Saurer BD / high-speed configurations). Verify your spin box type before ordering.
Top: Standard body · Bottom: Segmented body — dimensions L, L1, L2, Φd, Φd1 labeled
Three Numbers Identify Any Bearing
A rotor bearing is defined by shaft diameter, shoulder positions, and speed rating. Find all three on your existing part or spin box — then use the selector below.
Shaft Diameter — Φd
8 mm (ultra-high speed), 8.9 mm (universal, most common) or 10 mm (heavy-duty). Seat Φd1 is 22 mm on every JSM model.
Shoulders — L1 / L2
L1=13 / L2=61 mm is standard. L1=18 / L2=56 mm is a separate group (models 73-1-31, 73-1-22, 73-1-14) that does not interchange.
Operating Speed — RPM
Match your spin box speed (45,000–115,000 RPM) to the model’s recommended range. Running above rated speed shortens life and risks seizure.
Find Your Rotor Bearing in 3 Steps
Answer two questions — we match the exact model for your machine.
| Model | Φd (mm) | L (mm) | L1 / L2 (mm) | Max Speed | Rec. Speed | JSM Part # |
|---|
Not sure which is right? Share your machine model or existing part number below.
Get Quote in 24h →We’ll measure it, confirm the model, and quote you within 24 hours.
Submit Inquiry →Complete 13-Model Reference Table
All JSM rotor bearings share Φd1 = 22 mm. Key differences: shaft diameter, shoulder position (L1/L2), and speed rating.
| Model | Φd | Φd1 | L (mm) | L1 (mm) | L2 (mm) | Max Speed | Rec. Speed | JSM Part # |
|---|---|---|---|---|---|---|---|---|
| JQ16 | 8 | 22 | 108 | 13 | 61 | 120,000 | ≤ 115,000 | 561160A |
| Model | Φd | Φd1 | L (mm) | L1 (mm) | L2 (mm) | Max Speed | Rec. Speed | JSM Part # |
|---|---|---|---|---|---|---|---|---|
| JQ13 | 8.9 | 22 | 108 | 13 | 61 | 110,000 | ≤ 105,000 | 561013A |
| JQ13C | 8.9 | 22 | 112 | 13 | 61 | 110,000 | ≤ 105,000 | 56113CA |
| T013 | 8.9 | 22 | 108 | 13 | 61 | 110,000 | ≤ 105,000 | 561113A |
| 72-8-6 | 8.9 | 22 | 108 | 13 | 61 | 110,000 | ≤ 105,000 | 561286A |
| T100 | 8.9 | 22 | 112 | 13 | 61 | 110,000 | ≤ 105,000 | 561100A |
| T010 | 8.9 | 22 | 112 | 13 | 61 | 100,000 | ≤ 95,000 | 561010A |
| 72-6 | 8.9 | 22 | 112 | 13 | 61 | 90,000 | ≤ 81,000 | 561726A |
| Model | Φd | Φd1 | L (mm) | L1 (mm) | L2 (mm) | Max Speed | Rec. Speed | JSM Part # |
|---|---|---|---|---|---|---|---|---|
| 72-8 | 10 | 22 | 112 | 13 | 61 | 80,000 | ≤ 72,000 | 562728A |
| 73-1-69 | 10 | 22 | 108 | 13 | 61 | 80,000 | ≤ 72,000 | 562169A |
| 73-1-31 | 10 | 22 | 112 | 18 ⚠ | 56 ⚠ | 80,000 | ≤ 72,000 | 562131A |
| 73-1-22 | 10 | 22 | 112 | 18 ⚠ | 56 ⚠ | 60,000 | ≤ 50,000 | 562122A |
| 73-1-14 | 10 | 22 | 112 | 18 ⚠ | 56 ⚠ | 60,000 | ≤ 45,000 | 562114A |
⚠️ Models 73-1-31, 73-1-22, and 73-1-14 use L1=18 / L2=56 — a different shoulder configuration that does NOT interchange with the L1=13 group. Verify your housing dimensions before ordering.
Direct-Fit for All Major OE Platforms
No machine modification required. JSM bearings are dimensionally identical to OEM — at 40–60% lower cost.
Autocoro 9 / 10 / 11
R923, R35, R36, R37
BD 380, 416, 448 · BD 6, BD 7
JWF 1618 · RF-RS10 / RF-RS30
Machine not listed? Send us your bearing or drawing — full reverse-engineering in-house, from forging to coating. → Submit Custom Request
DN Diamond vs BD Boronized
Coating choice is the single biggest factor in bearing lifespan at high speed. Choose by your operating RPM and budget.
DN Diamond
BD Boronized
Pro tip: For high-speed machines (100K+ RPM), the DN diamond upgrade typically pays for itself within 3–6 months through reduced maintenance stops and extended replacement intervals.
Common Problems — Quick Diagnosis
Most rotor bearing failures follow recognizable patterns. Identify yours and act before it becomes a production stop.
Rotor Bearing — Frequently Asked Questions
Can JSM rotor bearings directly replace OEM bearings?
Yes. JSM bearings are manufactured to the exact mounting dimensions and speed ratings required by Schlafhorst, Rieter, Saurer, Taitan, Jingwei and Rifa OE machines — no machine modification is needed. You keep the same part numbers, at 40–60% lower cost.
How do I know which shaft diameter my machine uses?
Three shaft diameters are available: Φd = 8 mm, Φd = 8.9 mm and Φd = 10 mm (Φd1 = 22 mm on every model). Also check the shoulder positions L1/L2 — 13/61 mm or 18/56 mm — because a 0.5 mm mismatch can cause bearing seizure. When in doubt, send us a photo of your existing bearing and we will confirm the model within 24 hours.
DN diamond or BD boronized — which coating should I choose?
Choose DN diamond (HV 8,000–10,000) for machines running at or above 100,000 RPM — it lasts 2–3× longer with near-zero cotton build-up. Choose BD boronized as the cost-effective standard for machines up to 90,000 RPM. If you run mixed lines, standardize on DN for the high-speed positions and BD for the rest.
Which machines are JSM rotor bearings compatible with?
Schlafhorst Autocoro (SE7–SE20), Rieter R-series and BD-series (R1, R4, R20, R40, R60, R923, R35, R36, R37), Saurer BD 200–448 (BD 6, BD 7), and Chinese platforms Taitan TQF-268/368/568, Jingwei K80/K90/JWF 1618, Rifa RF-RS10/RF-RS30. Machine not listed? Send us your bearing or drawing — we reverse-engineer in-house.
What is the MOQ and lead time?
We accept trial orders (small quantities for testing) as well as bulk production orders. Standard models ship within 7–15 days; custom reverse-engineered orders typically take 20–30 days depending on specification.
How do I place an order?
Send your machine model or existing part number through the inquiry form. JSM confirms the exact model and sends a quotation within 24 hours, followed by a proforma invoice with payment terms. Production starts once payment is confirmed.
Complete Your Spin Box from One Supplier
Ordering the full set — rotor complete, bearing, and opening roller — means one freight, one invoice, and consistent DN coating across the spin box.
Rotor Complete & Rotor Spindle
Ready-to-mount assemblies (cup + spindle, pre-balanced) for all OE platforms, with custom groove and coating.
Opening Roller Complete
Plug-and-play opening roller / combing roller complete assemblies, ready to mount and spin.
Clothing Ring
One-piece precision rings with integrated tooth profile — B174, S21, OB20, OK40, OK61, OS21.
Rotor Cup Selection Guide
Match rotor cup diameter and groove profile (G / T / TT / S / U / GL) to your yarn count, Ne 3–40.
Find Your Bearing — Get a Quote in 24 Hours
Tell us your machine model or existing part number. We confirm the right JSM model with price and lead time.