Carbide Bushings & Sleeves
No.2 in China — 3,000,000 pcs/year for electric submersible pumps (ESP)
Radial bearings, bushings and sleeves in 11 tungsten carbide grades for electric submersible pumps (ESP), mud motors and rotating equipment. Tungspire is the No.2 manufacturer in China with an annual capacity of 3 million pieces, supplying OEM pump builders in North America and beyond.
OEM per drawingAPI 11AX complementaryISO 9001 process control
Key features
- 11 grades tuned for abrasion, corrosion and impact combinations downhole
- Tight ID/OD concentricity for stable rotor support in long ESP assemblies
- Polished bores reduce friction torque and start-up wear
- Carbide-on-carbide and carbide-on-steel pairing recommendations available
- High-volume automated grinding lines keep unit cost low at OEM scale
Representative grades
| Grade | WC | Binder | Hardness | TRS (N/mm²) | Density (g/cm³) | Typical application |
|---|---|---|---|---|---|---|
| YG6 | 94% | Co 6% | HRA 89.5 | ≥ 2150 | 14.95 | ESP sleeves, clean fluid service |
| YG8 | 92% | Co 8% | HRA 89.0 | ≥ 2300 | 14.70 | ESP radial bearings, sandy wells |
| YG11 | 89% | Co 11% | HRA 87.5 | ≥ 2600 | 14.40 | High-vibration ESP stages |
| YN6 | 94% | Ni 6% | HRA 89.0 | ≥ 1950 | 14.85 | Corrosive produced water, H₂S |
Representative grades shown. Full grade portfolio and custom formulations available on request.
Typical applications
Electric submersible pumps (ESP)Progressing cavity pump drivetrainsMud motor radial bearingsSlurry pump shaft sleeves