D4028
High Chrome A05 Dynamic Dry Expeller for 6/4 D
Secondary expeller vane wheel generating a counter-centrifugal pressure ring against the pump chamber, preventing slurry leakage into the stuffing box without gland water.
Metallurgical Specifications & Dimensional Interchangeability
| Universal Code: | D4028 (SMAT-SEAL-4X3-EXP) |
|---|---|
| Compatible Frame & Pipe Series: | Slurry pump frame 6/4 D (Series 4X3) |
| Component Type: | Secondary Dry Centrifugal Sealing Expeller Vane Wheel |
| Unit Mass & NIOSH Handling: | 16.4 kg — 2-Person Assisted Shaft Mount (MANUAL_SAFE • LI=1.48 vs RWL=11.1 kg) |
| Critical Wall Thickness: | 20 mm (High Chrome A05 (27% Cr, ASTM A532 Class III Type A)) |
| Outer Diameter (∅D₂): | 265 mm |
| Max Sphere Passage (Solids): | 20 mm |
| BOM Station & Precedence: | Station 02 — 05. Impulsor Expulsor Centrífugo D4028 (Estación 02 • Sello Seco) |
| Metallurgy: | High Chrome A05 (27% Cr, ASTM A532 Class III Type A) |
| Verified Hardness: | ≥ 650 HB (Brinell) / 58-62 HRC |
| Vane Geometry: | 8 closed vanes with dynamic expeller back vanes |
| Critical Application: | Flush-free dynamic shaft sealing in 6/4 D pumps under controlled suction head |
| Assembly Guarantee: | Static balance and keyway fit verified at Durango Central Warehouse. |
| Everyday Physical Scale (ISO/IEC 7810): | Optimal reference axial clearance δ = 0.76 mm (exact thickness of 1 standard ISO 7810 bank card). |
1:1 Dimensional Fit & Dynamic Balance Assurance
Every D4028 unit is physically matched against standard frame dimensions before dispatch from our Durango Central Warehouse. We ensure 100% drop-in interchangeability with industry-standard frames. Should a standard replacement part fail to fit your pump casing, it is immediately swapped from our floor stock.
Fine-tolerance manufacturing prints and complete internal dimensional matrices are kept off public tables to safeguard intellectual property. Detailed mechanical drawings and compliance dossiers are shared privately with authorized mine plant engineering and procurement teams.