At a glance
| Booth | R8206 |
| Country | TW |
| Website | www.bayunion-tech.com |
Company profile
Bay Union Abrasive Technology Co., Ltd. was founded in 1987 and has focused on vitrified-bonded grinding wheels for many years. The business began with small vitrified grinding wheels and developed mass-production capability for industrial mounted points through vitrified-bond know-how and self-developed production equipment. Bay Union states that its advanced vitrified bonds and self-developed equipment allow grinding wheels to be supplied quickly and consistently. The company has supplied its domestic market as well as export markets in Europe, the United States, and Japan. It emphasizes customization and states that customer application needs can be translated into tailored grinding-wheel consumables and grinding parameters. Its stated application sectors include automotive, bearing, gear, precision mold, semiconductor, and aerospace industries. For semiconductor grinding, Bay Union states that it optimizes diamond and binder formulation together with grinding-speed ratios to improve efficiency and consumable life. The company applies that grinding-development approach to crystal-rod rounding, wafer thinning, and wafer back-grinding.
Exhibits
Bay Union conventional bonded grinding wheels use abrasive grains including aluminum oxide and silicon carbide for grinding, polishing, finishing, detailed work, and general-purpose grinding. The conventional range includes surface, cylindrical, internal-ID, and profile grinding wheels, each addressing a different workpiece geometry and finishing requirement. Surface grinding is used to obtain smoothness, contours, or angle requirements on flat surfaces and is listed for materials including hardened steel, ceramics, and carbide. Cylindrical grinding targets the outside surface of rotating workpieces and is used for high precision and surface-roughness control on parts such as crankshafts, camshafts, spindles, and small precision components. Internal-ID grinding addresses hole-size accuracy and surface roughness, while profile grinding covers curved or grooved surfaces where heat discharge and profile retention are important. In bearing production, grinding wheels are used to grind, finish, polish, smooth, and shape bearing surfaces and components. Bearing grinding requires consistent finishes to hold required tolerances and control friction, heat generation, and wear. The desired bearing surface roughness can be adjusted through abrasive grit and bond selection. Bearing applications include inner and outer rings, balls, and rollers, where uniform sizing and shaping affect performance and durability. The bearing application material discussion includes aluminum oxide, silicon carbide, and diamond abrasives. For gear manufacturing, grinding wheels shape gear teeth to the required geometry so they can engage correctly with mating gears. Gear grinding is also used to establish the desired tooth-surface finish, which affects friction, wear, performance, and service life. The process removes residual burrs, excess material, and rough edges left by earlier cutting operations. The gear application covers mechanical systems including automobiles, airplanes, and industrial machines. Bay Union notes that gear grinding wheels are offered in different shapes, sizes, and abrasive materials including aluminum oxide, silicon carbide, and diamond. Automotive grinding applications include crankshafts, camshafts, and cylinder blocks, where surface finish and dimensional accuracy are required. Grinding is used on engine components to remove surface defects and establish the finish needed for engine operation. Transmission-gear production uses grinding to control tooth precision and remove surface irregularities so gears interlock effectively. Grinding wheels are also used in automotive disc-brake and brake-pad production. For brake rotors, the grinding operation is used to create a flat and smooth surface where irregularity could otherwise reduce braking performance. Mounted Wheels Type A is intended mainly for offhand applications in foundries, steel mills, metal-fabrication plants, and stone industries. Type A uses a standard 6x30 mm shank and can be supplied with other customized shank sizes. Mounted Wheels Type B is intended mainly for light deburring in tool and die industries, with a standard 3mm*30mm size and customizable shank diameter or length. Mounted Wheels Type W is intended for offhand and precision grinding involving medium-to-heavy stock removal. Type W lists standard sizes of 3x30mm and 6x30mm and also supports customized shank diameter and length. A documented case uses a slide rail or slider made from Stainless steel SUS440 in surface grinding with an EB series 1A 405*50*127 wheel. The company site lists an A1 Mounted Points and Mounted Wheels example with size 19x65mm, grit #46, and 50A Pink Aluminum Oxide raw material. Bay Union identifies continuous generating grinding of gears as an area where increasing automation and digitization affect gear-manufacturing efficiency and mechanical-transmission reliability. Its listed application set on the same product platform spans automotive, bearing, gear, precision mold, semiconductor, and aerospace work. The company connects its vitrified-bond technology and self-developed production equipment with fast and steady grinding-wheel supply. The BF surface-grinding wheel uses SG grain and is listed for general steel and alloy at HRc40~60. The CK surface-grinding wheel uses a blend of special abrasives for STAVAX, SKH, and SKD at over HRc55. Selection of a surface-grinding wheel can be based on workpiece material, target surface roughness Ra, tolerance, and processing-cost objectives. The surface-grinding range is intended for reciprocating and rotary-table grinding machines. The documented SUS440 slide rail or slider case uses surface grinding with an EB series 1A 405*50*127 wheel. Profile grinding covers curved and grooved surfaces and requires heat discharge and profile-holding capability because the wheel-workpiece contact area is relatively large. The profile-grinding page identifies precision, stability, and surface roughness as key factors. CKS gear-grinding wheels use high self-sharpening abrasives to support heat dissipation for commonly used gear materials and reduce tooth-surface burns. BFV gear-grinding wheels combine SG abrasives with a high-grip, low-temperature ceramic binder and a 900-degree sintering process. The EBT/BFW/GFW series uses microcrystalline abrasives for continuous generating grinding and is presented for challenges associated with surface-hardened gears. The semiconductor grinding range covers silicon carbide SiC, gallium nitride GaN, and sapphire, using diamond grinding wheels for wafer thinning, back grinding, surface preparation, and fine grinding. For semiconductor wafers, grit, wheel structure, and grinding specification are selected to balance material-removal efficiency, surface finish, and wheel life from coarse grinding to ultra-fine finishing. CBN is described as 2-2.5 times as hard as traditional abrasives, with high thermal conductivity, compressive strength, and wear resistance for efficient grinding. Vitrified-bonded CBN wheels are listed for hardened steel and superalloys, with applications including bearings, screws, linear guideways, spindles, tool holders, and precision molds. The vitrified-bonded CBN range lists diameters of 2~455mm, thicknesses of 2~50mm, and grit specifications of #80~#320. GF cylindrical wheels are listed for general steels and alloys including S45C, SCr420, and SNCM, while CK cylindrical wheels target SKD, SUJ2, general steels, and alloys. PP cylindrical wheels are identified for high-density alloy grinding and applications including cold forging, hot forging, SKH, and SKD. For internal-ID grinding, PP Internal Grinding Wheel is listed for stable removal on SUJ2 and composite material at HRc50~63. An internal-grinding case uses a dividing plate made from refining material HRC 28-32, with inner sizes 26D*25L and 50D*5L and a PP series 5A 25*25*6 wheel. A special-machine manufacturer case covers various customer parts made from Carbon steel and Green cross carburizing, using cylindrical grinding with GF series 1A/5A Φ405/Φ455/Φ510 wheels. The vitrified-bonded CBN description states that this wheel type can provide workpiece precision and stable grinding quality while reducing the possibility of grinding burns. Bay Union states that customers moving from traditional aluminum grinding wheels to CBN wheels can receive specification advice, with CBN wheel sizes offered across the listed range.
Capabilities and products
- Vitrified-bond grinding wheel manufacturing
- Industrial mounted grinding wheel manufacturing and custom shank sizing
- Surface grinding wheels
- Cylindrical grinding wheels
- Internal grinding wheels
- Profile grinding wheels
- Gear grinding wheels
- Continuous generating gear grinding wheels
- Vitrified-bond CBN grinding wheels
- Diamond grinding wheels for SiC, GaN and sapphire
- Wafer thinning and back-grinding solutions
- Crystal ingot rounding solutions
- Custom development of grinding wheel consumables and grinding parameters