| Customization: | Available |
|---|---|
| Customized: | Customized |
| Certification: | ISO |
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| Series | Dimensions (mm)
(ID × OD × Thickness) | Typical Model | Application Scenario |
|------------|---------------------------|-----------------|----------------------------|
| SCU | 8×10×10 | SCU-0805 | Micro motor drive ends |
| | 10×12×12 | SCU-1008 | Textile machinery spindles |
| | 12×15×12 | SCU-1210 | CNC machine ball screw supports |
| SC | 20×25×20 | SC-2015 | Centrifugal pump shafts (≤7.5kW) |
| | 25×30×20 | SC-2518 | Industrial fans (1500 RPM) |
| | 30×35×25 | SC-3020 | Agricultural PTO shafts |
| | 40×45×25 | SC-4025 | Hydraulic gear pumps |
| SCX | 60×65×40 | SCX-6075 | Crusher drive shafts (mining) |
| | 80×85×45 | SCX-8090 | Cement vertical mill reducers (550kW) |
| | 100×105×50 | SCX-100105 | Marine thruster intermediate shafts |
| SCH | 130×135×80 | SCH-130135 | Ball mill main bearings |
| | 180×185×100 | SCH-180185 | Port crane slewing rings |
| | 200×205×120 | SCH-200205 | Thermal power plant steam turbines |
| Application Requirement | Dimensions (mm) | Design Adaptation |
|---|---|---|
| High temp. (>150°C) | 40×45×28 *(+20% thickness)* | Thermal expansion compensation |
| Severe corrosion | 30×35×25 (AISI316L) | Stainless steel upgrade |
| Heavy shock loads | 100×105×60 *(+20% thickness)* | Interference fit ↑0.08mm |
ID Tolerance: Strict h6 class required (e.g., Ø30mm ID = 30.mm)
Thickness Baseline:
Interference Fit Calculation:
Field Verification: In 22kW water pumps, SC-2518 (25×30×20) achieved 24,000+ service hours - 300% lifespan improvement vs. standard sleeves.
(Legend: d=ID, D=OD, B=Thickness)
UJK SHAFT Sleeves provide a rigid, backlash-free connection between bearings with cylindrical bores and shafts. Engineered for applications requiring maximum positional stability, these sleeves eliminate machining complexities while ensuring vibration-free power transmission in high-torque environments.
Zero Taper Design: Straight bore for simplified installation
Interference Fit: Maintains positional accuracy under extreme loads
Hardened Surfaces: 55-60 HRC hardness for wear resistance
Cost Efficiency: Reduces need for precision-ground shafts
Corrosion Options: A2/A4 stainless steel variants available
| Series | Shaft Dia. (mm) | Bore Dia. (d1 ±0.005mm) | Width (B mm) | Chamfer (r min) | Static Load Rating (kN) | Example Model |
|---|---|---|---|---|---|---|
| SC | 15-50 | 20-55 | 12-30 | 0.6 | 45-120 | SC-2015 |
| SCX | 55-120 | 60-130 | 35-65 | 1.0 | 150-380 | SCX-6075 |
| SCH | 130-260 | 135-270 | 70-120 | 1.5 | 420-950 | SCH-140130 |
| SCU | 5-18 | 8-22 | 8-15 | 0.3 | 12-35 | SCU-0805 |
Note: All dimensions per ISO 8443:2021 tolerance class h6
Material Science:
Base material: C45E carbon steel (550 MPa yield strength)
Surface treatment: Nitrided for 0.2-0.3mm case depth
Precision Grinding:
Bore finish: Ra ≤ 0.8 μm
Concentricity: < 0.01 mm TIR
Thermal Stability: Operating range: -30°C to +150°C
| Mounting Type | SHAFT Sleeve Use Case | Adapter Sleeve Use Case |
|---|---|---|
| Shaft Prep | Straight shaft (no taper) | Tapered shaft required |
| Adjustability | Fixed position | Axial position adjustable |
| Load Capacity | Extreme shock loads | Moderate-vibration environments |
| Typical RPM | ≤ 3,500 | ≤ 5,000 |
Crusher Systems: SCH-series for jaw crusher eccentric shafts
Generator Sets: SCX-series in turbine bearing assemblies
Agricultural Gearboxes: SC-series for PTO shaft supports
Rail Traction Motors: SCU-series in compact drive units
*"In cement plant hammer crushers, UJK SCH sleeves increased bearing service life by 40% versus direct-shaft mounting."*
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