The role of various parts in the bearing

For a radial bearing, the inner ring usually fits tightly with the shaft and operates with the shaft. The outer ring is usually in a transitional fit with the bearing housing or the mechanical housing bore for support. However, in some cases, there is also an outer ring running, the inner ring is fixed to support or the inner ring and the outer ring are simultaneously operated. For a thrust bearing, a shaft ring that fits tightly with the shaft and moves together, and a bearing ring that is in a transitional fit with the bearing housing or the mechanical housing bore and serves as a support. The rolling elements (steel balls, rollers or needles) are normally arranged in the bearing between the two ferrules by means of a cage for rolling motion. The shape, size and number of the bearings directly influence the load capacity and performance of the bearing. In addition to the uniform separation of the rolling elements, the cage can also function to guide the rotation of the rolling elements and improve the lubrication performance inside the bearing.

Brad Point Drill Bit

Hcs Drill Bits For Wood-Brad Point Drill Bit

HCS Rolled Woodworking Wood Brad Point Drill Bit for Wood Precision Drilling,

carbide Steel with Heat Treatment (High Speed Steel is available)

1.Made from high quality, hardened carbon steel for added durability;
2.Brad point tip provides accurate positioning for starting the hole;

Features 1.High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance.
2.Universal 118° point shape for drilling a wide selection of materials.
3.Precision ground point, flutes, body, clearance and drill diameter for the ultimate in accuracy and performance.
4.Ground flutes provide fast chip removal to maximize accuracy and efficiency along the full working surface of the bit.

Product Name 4mm Wood Use DIN338 Fully Ground Impact Driver Drill Bits
Material HSS (Cobalt HSS-E is Available)
Process Fully Ground (Rolled, Rolled & Polished, Milled are Available)
Standard DIN338 (Stub DIN1897, Long DIN340, Extra Long DIN1869,

Reduced Shank are Available)



  • Hss Drill Bits For Wood-Hss Brad Point Drill Bit Product Information


  • High Quality Different Types Of Wood Brad Point Drill Bit for woodworking

    • Made of high carbon steel with brad point and two shouldered cutting spurs.
    • Cutting flutes are engineered for optimum chip ejection so drill will not bind and burn out.
    • For drilling accurate,splinter-free holes in soft wood,hard wood,plywood and hard board.
    • Use in hand drill,electric drills,drill presses and lathes.

    • Brad Point Drill Bit,Brad Point Two Cutting Spurs Drill,Rolled Drill Bits For Metal,Hss Stubby Brad Point Drill

    Changzhou Bomitools Co.,Ltd. , https://www.bomitools.com