Choosing the right bearing for a power transmission job usually comes down to three questions: What is the shaft speed and load? What mounting style fits the machine? And how much do you want to spend? This group of four options spans $17.75 to $206.87, so the first decision is not just part number-it is application.
Quick Take
Four very different bearing jobs are covered here. The FYH UCFL20516EG5NP is a unit with a cast iron housing, built for demanding industrial environments. The AXIS NU315 EMC3 is a heavyweight option for substantial shafts. The Timken QAF07046SM is a straightforward unit for anyone who already knows that part number. The Uxcell 604ZZ 8-pack is the low-cost path for small, fast equipment.
But the quick take only helps if the price gap is clear. Here is the direct price comparison:
| Product | Price | Price Bar | Key Strength |
|---|---|---|---|
| Timken 2 Bolt Bearing QAF07046SM | USD 150.00 | Unit with a known model spec | |
| NEW FYH UCFL20516EG5NP 1" Bore Nickel Plated 2-Bolt Flange Bearing Unit | USD 23.99 | Nickel-plated flange unit with 1-inch bore | |
| NU315 EMC3 AXIS Cylindrical Roller Bearing Heavy Duty Industrial Replacement | USD 206.87 | 75mm bore, 160mm OD cylindrical roller | |
| 8 Pcs 604ZZ 4x12x4mm Deep Groove Ball Bearing Metal Sealed Industrial Bearing | USD 17.75 | Eight compact bearings in one pack |
The bars show relative price weight at a glance, but the right bearing is not just the cheapest one. Use this matrix to match your application:
Decision Matrix
- Small motors, RC cars, and fans? The Uxcell 604ZZ small-bearing set is sized for light, high-speed jobs.
- Conveyors and washdown areas? The FYH UCFL20516EG5NP is built for that environment.
- Heavy in-line drives and replacements? The AXIS NU315 EMC3 handles the load.
- General industrial automation with a known part number? The Timken QAF07046SM keeps the replacement simple.
Product Notes
Timken 2 Bolt Bearing QAF07046SM
If your maintenance team already has QAF07046SM in the parts list, the Timken 2-bolt bearing unit is a straightforward replacement. It is sold as a single unit and designed for industrial automation and motion control machinery, so it suits steady, general-purpose power transmission work. The model number is the main specification to match, which makes it an easy call for teams that track their part numbers. The trade-off is cost: it is the second-most-expensive option here, and you are buying one unit, not a set. Go this route when you need a dependable replacement for a known Timken spec.
FYH UCFL20516EG5NP Nickel Plated 2-Bolt Flange Bearing Unit
The FYH UCFL20516EG5NP brings a 1-inch bore and a nickel-plated cast iron flange housing together in one mounted unit. That combination makes it a natural fit for food processing, packaging, conveyors, agricultural equipment, and material handling, especially where moisture is part of the environment. It is sold as one complete unit, which simplifies ordering. The fixed 1-inch bore is the limiting factor: this flange unit is for shafts that match that exact size. If your machine uses inch-dimension shafts, this is a practical, lower-priced way to get a corrosion-resistant flange bearing.
AXIS NU315 EMC3 Cylindrical Roller Bearing
The AXIS NU315 EMC3 is the heavyweight of this group. It is a cylindrical roller bearing from the NU300 series with a 75mm bore, a 160mm outside diameter, and a length through bore of 37mm. That scale is for substantial shafts and loads, not for compact motors or small bore equipment. It is an industrial replacement for drives and manufacturing maintenance, and its 9.2 lb weight reinforces the heavy-duty intent. The limitation is the size and price: this is the most expensive option here and it will not fit inch-sized small-bore machines. Choose it when the application already calls for a 75mm bore cylindrical roller bearing.
Uxcell 604ZZ 8-Pack Deep Groove Ball Bearings
The Uxcell 604ZZ option gives you eight metal-sealed deep groove ball bearings in one pack, each with a 4mm bore, 12mm outside diameter, and 4mm width. That makes it a practical maintenance pack for miniature gearboxes, power tools, household appliances, and hobby machines like RC cars, printers, and fans. You get enough spares for several repairs without buying individual bearings. The catch is the compact size: this is not a heavy-load bearing, and it cannot replace a 1-inch flange unit or a 75mm-bore cylindrical roller bearing. For light-load, high-speed applications where space is tight, this pack is the least expensive way to keep things spinning.
Final Recommendation by Use Case
- Compact bearing set for small motors, appliances, or hobby gear? Choose the Uxcell 604ZZ.
- Mounted unit for washdown-friendly environments? Choose the FYH UCFL20516EG5NP.
- Heavy-duty option for industrial maintenance replacements? Choose the AXIS NU315 EMC3.
- Simple unit with a known model spec? Choose the Timken QAF07046SM.
