JM171649DGW/JM171610 Four-Row Tapered Roller Bearing

Load Distribution: Four distinct rows of tapered rollers to maximize dynamic radial load capacity.
Clearance Control: Factory pre-set axial and radial clearance via precision-ground spacers.
Lubrication System: Engineered with optimized lubrication grooves and holes in the outer rings for efficient grease delivery to all rows.

Product Overview:The JM171649DGW/JM171610 is a massive four-row tapered roller bearing, representing the pinnacle of roll neck bearing technology. Installed on the main work rolls of steel and aluminum mills, it supports catastrophic radial loads while simultaneously managing bidirectional axial thrust. The secret to its longevity is perfectly balanced load distribution across all four rows. DBS Bearings achieves this in our specialized assembly facility. Our technicians meticulously grind the inner and outer spacers, custom-matching them to the rollers to achieve the exact factory pre-set internal clearance. This 100% individual verification ensures drop-in installation and perfectly uniform rolling performance.

OEM & Customization Services:This is a highly technical assembly. DBS offers comprehensive OEM kitting, supplying the entire bearing assembly—including matched cups, cones, and spacers—securely strapped and serial-numbered as a singular matched set under your brand name.
FAQ:

Q: Does the mechanic need to adjust the clearance during installation?A: No. The 'W' in the suffix and the inclusion of spacers mean this bearing is factory-adjusted. It is a drop-in assembly, saving significant downtime.
Q: Why use a four-row tapered bearing instead of a spherical roller bearing?A: Four-row tapered bearings provide significantly higher load capacities in a given envelope and handle axial thrust more efficiently, making them ideal for modern, high-speed rolling mills.
Q: Can you laser mark the assembly serial numbers on all components?A: Yes, every matched component (cups, cones, spacers) will share a unique laser-etched serial number to prevent accidental mixing in the field.