BMT 51280 Bearing
Precision Metric Industrial Specification • High Speed & Load Dynamic Tolerances
| Bearing type | 51280 |
| d ( inner diameter) | 400 |
| D (Outer diameter ) | 560 |
| T ( Width ) | 120 |
| Grease lubrication | 220 |
| Oil lubrication | 360 |
| Dynamic Cr | 1180 |
| Static Cor | 3490 |
| Weight (kg) | 90 |
SAE 52100 Grade Steel
Manufactured from ultra-clean high-carbon chromium steel (100Cr6), hardened to 60-64 HRC for exceptional fatigue life and resistance to subsurface cracking.
In-House QC & Testing Labs
100% pre-dispatch quality verification performed at our dedicated in-house testing laboratories by qualified QC engineers for dimensional runout, radial clearance, and noise testing.
Precision Class (P0 / P6 / P5)
Standard ABEC-1 (ISO Normal / P0) tolerance with optional P6/P5 precision grades for ultra-low vibration (V2/V3) and high rotational accuracy.
Thermal Stabilization
Dimensionally stabilized for continuous operating temperatures from -30°C to +120°C (standard), with high-temperature synthetic grease available up to +180°C.
Radial Clearance (CN / C3)
Available in Standard Normal Clearance (CN) for steady ambient operating environments or C3 Greater Clearance for thermal expansion.
Global Export & Trade Fairs
Export packaging ready for international supply via Nhava Sheva (JNPT) & Mumbai Air Cargo with upcoming planned participation in premier international trade expos.
Massive Axial Thrust Capacity
Cylindrical (811/812 series) and Spherical (292/293/294 series) roller thrust bearings engineered for extreme axial loads and high shock resistance.
Self-Aligning Barrel Rollers (29000 Series)
Spherical roller thrust design accommodating angular shaft deflections while simultaneously supporting substantial radial forces alongside heavy axial thrust.
One-Piece Machined Brass Cage (EM / MB)
Robust solid brass cage guided on the shaft washer sleeve or rollers for continuous operation in extruders, marine propulsion, and heavy gearboxes.
Circulating Oil Lubrication Ready
Internal raceway geometry promotes pumping action that circulates lubricating oil through the rollers and cage pockets.
Thrust Roller Bearing Suffix & Nomenclature Guide
Standard manufacturing suffixes for Thrust Roller Bearing series when placing bulk orders or cross-referencing OEM parts:
Frequently Asked Questions for Bearing 51280
Everything you need to know regarding specifications, tolerances, delivery, and quality assurance: