TKXF Series
The ferrofluid sealing device adopts flange connection. 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 drive shaft rotates together with the flanged shaft sleeve. It is suitable for vacuum sealing at medium and low rotating speeds in high temperature environments.
Hollow shaft specifications of ZKXF type. Customers can use their own prepared shafts, which provides design freedom. Bearing specifications for both ends are available.
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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.
Product Specifications
| Model | TKXF06 | TKXF010 | TKXF012 | TKXF016 | TKXF020 | TKXF025 | TKXF030 |
|---|---|---|---|---|---|---|---|
| A [mm] | 6-0.018 0 | 10-0.02 0 | 12-0.02 0 | 16-0.02 0 | 20-0.02 0 | 25-0.02 0 | 30-0.02 0 |
| B [mm] | 90 | 105 | 110 | 125 | 140 | 155 | 160 |
| E [mm] | 47f7-0.030 -0.060 | 57f7-0.030 -0.060 | 63f7-0.036 -0.071 | 67f7-0.036 -0.071 | 77f7-0.036 -0.071 | 82f7-0.036 -0.071 | 90f7-0.036 -0.071 |
| H [mm] | M30X1.5 | M39X1.5 | M45X1.5 | M18X1.5 | M56X2 | M60X2 | M68X2 |
| V [mm] | 2X1.5X12 | 3X1.8X14 | 4X2.5X16 | 5X3.0X20 | 6X3.5X25 | 8X4.0X30 | 8X4.0X30 |
| G [mm] | 41 | 50 | 55 | 60 | 70 | 75 | 80 |
| C [mm] | 17 | 20 | 20 | 25 | 30 | 35 | 35 |
| F [mm] | 8 | 10 | 10 | 10 | 10 | 10 | 12 |
| L [mm] | 56 | 65 | 70 | 75 | 80 | 85 | 90 |
| 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) | Seal Nuts and steel washers (TKXF series) | |