H7N
H7N
| Item | Part no. to DIN 24250 |
Description |
| 1.1 | 472 | Seal face |
| 1.2 | 485 | Drive collar |
| 1.3 | 474 | Thrust ring |
| 1.4 | 412.1 | O-Ring |
| 1.5 | 477 | Spring |
| 1.6 | 904 | Set screw |
| 2 | 475 | Seat (G9) |
| 3 | 412.2 | O-Ring |
1) d1 > 100 mm: 2 mm x 30°
2) d1 > 100 mm: 30°
3) d1 > 100 mm: +0.1
4) d1 > 100 mm: H7
H7N
Features
- For stepped shafts
- Single seal
- Balanced
- Super-Sinus-spring or multiple springs rotating
- Independent of direction of rotation
- Integrated pumping device available (H7F, H75F)
- Variant with seat cooling available (H75G115)
Advantages
- Universal application opportunities (standardization)
- Efficient stock keeping due to easily interchangeable faces
- Extended selection of materials
- Flexibility in torque transmissions
- Self cleaning effect
- Short Installation length possible (G16)
Materials
Seal face: Silicon carbide (Q1, Q2), Carbon graphite antimony impregnated (A), Aluminium oxide (V), CrMo cast steel (S)
Seat G9: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1*, Q2*)
Secondary seals: EPDM (E), NBR (P), FKM (V), FFKM (K)
Springs: CrNiMo steel (G)
Metal parts: CrNiMo steel (G), Duplex (G1)
* Cannot be combined with seal face made of S
Seat G9: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1*, Q2*)
Secondary seals: EPDM (E), NBR (P), FKM (V), FFKM (K)
Springs: CrNiMo steel (G)
Metal parts: CrNiMo steel (G), Duplex (G1)
* Cannot be combined with seal face made of S
Standards and approvals
- EN 12756
Recommended applications
- Process industry
- Oil and gas industry
- Refining technology
- Petrochemical industry
- Chemical industry
- Power plant technology
- Pulp and paper industry
- Food and beverage industry
- Hot water applications
- Light hydrocarbons
- Boiler feed pumps
- Process pumps
Product variants
H75
Shaft diameter: d1 = 28 ... 200 mm (1.10" ... 7.87")
As H7N, but with multiple springs in sleeves (Item no. 1.5)
Axial movement: ± 2 ... 4 mm, dependent on diameter.
Shaft diameter: d1 = 28 ... 200 mm (1.10" ... 7.87")
As H7N, but with multiple springs in sleeves (Item no. 1.5)
Axial movement: ± 2 ... 4 mm, dependent on diameter.
H76
Shaft diameter: d1 = 14 ... 100 mm (0.55" ... 3.94")
Dimensions, items and description as for H7N, but with special single spring (Item no. 1.5) for compensating large axial movements (± 4 mm).
Shaft diameter: d1 = 14 ... 100 mm (0.55" ... 3.94")
Dimensions, items and description as for H7N, but with special single spring (Item no. 1.5) for compensating large axial movements (± 4 mm).
H7F
Shaft diameter: d1 = max. 100 mm (3.94")
Dimensions, items and descriptions as for H7N, but with single spring and pumping screw.
Dependent on direction of rotation. (Viscosity ≤ ISO VG10).
Shaft diameter: d1 = max. 100 mm (3.94")
Dimensions, items and descriptions as for H7N, but with single spring and pumping screw.
Dependent on direction of rotation. (Viscosity ≤ ISO VG10).
H75F
Shaft diameter: d1 = 28 ... 200 mm (1.10" ... 7.87")
Dimensions, items and descriptions as for H7N, but with single spring and pumping screw.
Dependent on direction of rotation. (Viscosity ≤ ISO VG10).
Shaft diameter: d1 = 28 ... 200 mm (1.10" ... 7.87")
Dimensions, items and descriptions as for H7N, but with single spring and pumping screw.
Dependent on direction of rotation. (Viscosity ≤ ISO VG10).
Similar products
AX25
- External configuration
- Balanced
- Independent of direction of rotation
- Independent of pressure direction
AX25D
- Dual seal
- Balanced
- Independent of direction of rotation
- Independent of pressure direction
AX30
- Unbalanced
- Dependent on direction of rotation
- Solid seats