KXF 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 rotation of the drive shaft can drive the shaft sleeve to rotate together. To prevent the drive shaft from slipping, the clamp at the tail end of the shaft sleeve shall lock the shaft tightly. It is suitable for vacuum sealing at medium and low rotating speeds in high temperature environments.
Hollow-shaft ferrofluid seal. Bearing configuration: standard (supported at both ends). Water cooling: available. Straight cylindrical shaft with flat cut and keyway.
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.
| KXF010 | KXF016 | KXF020 | KXF025 | KXF030 | KXF040 | KXF050 | |
|---|---|---|---|---|---|---|---|
| A [mm] | 10+0.02 +0.04 | 16+0.02 +0.04 | 20+0.02 +0.04 | 25+0.02 +0.04 | 30+0.02 +0.04 | 40-0.007 -0.020 | 50+0.02 +0.04 |
| B [mm] | 78 | 81 | 85 | 88 | 90 | 98 | 108 |
| C [mm] | 60 | 66 | 73 | 80 | 86 | 98 | 115 |
| F [mm] | 10 | 10 | 12 | 12 | 12 | 15 | 15 |
| E [mm] | 97f7-0.030 -0.060 | 105f7-0.030 -0.060 | 112f7-0.030 -0.060 | 118f7-0.036 -0.071 | 125f7-0.036 -0.071 | 137f7-0.036 -0.071 | 156f7-0.036 -0.071 |
| H [mm] | 45 | 52 | 55 | 60 | 67 | 82 | 92 |
| J | 4-Φ10PCD80 | 4-Φ10PCD86 | 6-Φ10PCD93 | 6-Φ10PCD100 | 6-Φ10PCD106 | 8-Φ10PCD118 | 8-Φ10PCD136 |
| Water Cooling (Optional) | 2-Rc1/8 | 2-Rc1/8 | 2-Rc1/8 | 2-Rc1/8 | 2-Rc1/8 | 2-Rc1/8 | 2-Rc1/8 |
| V [mm] | 10 | 10 | 10 | 10 | 10 | 14 | 14 |
| G [mm] | 65 | 68 | 70 | 73 | 75 | 80 | 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) | Sealing ring Nuts and steel washers (KXF series) | |