SXF Series
The ferrofluid sealing device adopts insert-type connection. Two O-rings on the outer diameter of the housing mate with the chamber bore to maintain a static seal, and the shaft sleeve of the ferrofluid seal is rotatable. When the drive shaft is inserted into the shaft sleeve, two O-rings inside the shaft sleeve press tightly against the drive shaft to form a static seal between them. The rotation of the drive shaft drives the shaft sleeve to rotate together, thus realizing vacuum sealing for the drive shaft. It is suitable for vacuum sealing at low, medium and high rotating speeds under ambient temperature.
Solid shaft (integral shaft type): shaft diameter < 30mm. Bearing configuration: standard (supported at both ends). Water cooling: available upon request. Straight cylindrical shaft with flat cut.
This is the most standard flange-mounted type with bearings configured at both ends. Keyway machining on the shaft is an optional specification.
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Notes(*1) These values apply when using general vacuum-grade ferrofluid (Type A). Values will differ when using corrosion-resistant (Type F) and low vapor pressure / corrosion-resistant (Type U) ferrofluid.
(*2) Allowable speed when the shaft is under no load.
(*3) Allowable speed under radial load.
(*4) Refers to the maximum axial load when load is applied centrally to the ferrofluid seal shaft. Please contact us when the shaft bears axial load combined with other loads, or when the load deviates from the shaft center.
(*5) Starting torque refers to the maximum load torque at the start of rotation. These are reference values, not guaranteed values. When selecting a motor, please use three times the indicated values as reference.
| SXF06 | SXF010 | SXF012 | SXF016 | SXF020 | SXF025 | SXF030 | |
|---|---|---|---|---|---|---|---|
| A [mm] | 6-0.018 -0.012 | 10-0.02 -0.012 | 12-0.02 -0.012 | 16-0.02 -0.014 | 20-0.02 -0.012 | 25-0.02 -0.012 | 30-0.02 -0.012 |
| B [mm] | 90 | 105 | 110 | 125 | 140 | 155 | 160 |
| C [mm] | 17 | 20 | 20 | 25 | 30 | 35 | 35 |
| E [mm] | 67f7-0.025 -0.050 | 76f7-0.025 -0.050 | 86f7-0.025 -0.050 | 93f7-0.025 -0.050 | 97f7-0.025 -0.050 | 106f7-0.025 -0.050 | 115f7-0.025 -0.050 |
| F [mm] | 8 | 10 | 10 | 10 | 10 | 12 | 12 |
| H [mm] | 36 | 45 | 48 | 53 | 60 | 68 | 75 |
| J | 4-Φ8PCD52 | 4-Φ8PCD60 | 4-Φ10PCD68 | 4-Φ10PCD73 | 4-Φ10PCD80 | 4-Φ10PCD88 | 4-Φ10PCD95 |
| V [mm] | 2X1.2X12 | 3X1.8X14 | 4X2.5X16 | 5X3.0X20 | 6X3.5X25 | 8X4.0X30 | 8X4.0X30 |
| Bearing Model Number | 607 | 6001 | 6002 | 6003 | 6004 | 6005 | 6006 |
| Vacuum Resistance | 1.0x10-6Pa | |
|---|---|---|
| Leak Rate (He) | ≤ 9.9×10-11Pa・m3/sec | |
| Operating Atmosphere (*1) | In vacuum, inert gas, corrosive gas | |
| Materials Used | Housing | SUS 304 |
| Shaft | SUS 630 | |
| Magnetic Shoe | SUS 630 | |
| Bearing | SUJ2 | |
| O-ring | FKM | |
| Bearing Lubricant | Vacuum side: Fluoride-based vacuum lubricant Atmosphere side: General lubricant with rust inhibitor | |
| Standard Spare Parts (*2) | Sealing ring Nuts and steel washers (SXF series) | |