Import Bt 30 Bt40 Precision Er Tool Holders — Buy in wholesale FOB from Supplier in China

BT 30 and BT40 Precision ER Tool Holders from Suzhou Rico Machinery are spindle interface tools for CNC machining centres, manufactured from high-grade chrome alloy steel (42CrMo or equivalent) in Suzhou, Jiangsu Province, China. These tool holders accommodate ER collet systems and are engineered for runout accuracy below 0.005 mm, a critical parameter for high-speed cutting, drilling, and reaming operations where surface finish and dimensional precision determine part acceptability. The BT (Bolt Taper) interface, developed from Japanese standards, provides dual contact on the taper face and flange for enhanced rigidity compared to purely taper-dependent systems, making these holders suitable for 10,000-20,000 RPM spindle speeds typical in modern vertical and horizontal machining centres.

The 42CrMo chrome-molybdenum steel construction provides tensile strength typically 900-1100 MPa and hardness 28-32 HRC after heat treatment, offering fatigue resistance under cyclic cutting loads. The BT30 variant suits compact machining centres and lighter-duty applications with tool capacity up to approximately 16 mm diameter, while BT40 handles heavier stock removal with larger collet ranges and greater torque transmission. Precision grinding of the taper to AT3 or better accuracy grade ensures interchangeability across machine spindles from manufacturers including Mazak, Mori Seiki, Okuma, and Haas. The ER collet system (ER16, ER20, ER25, ER32, or ER40 depending on holder specification) provides 1 mm or 1/32 inch clamping range per collet size, with a 2-8 degree included angle on the collet taper for uniform gripping force distribution.

Target buyers include aerospace component manufacturers, automotive tier suppliers, general engineering job shops, and industrial distributors supplying replacement tooling to metalworking operations. The holders serve as consumable-precision spares in high-mix, low-volume production environments where setup time reduction through reliable tool changeover directly impacts machine utilisation rates. Importers should confirm the specific BT taper variant (30 or 40), maximum RPM certification, collet series compatibility, and whether dynamic balancing to G2.5 or G6.3 at rated speed is standard or optional. Suzhou Rico Machinery's location in the Suzhou Industrial Park provides access to China's dense machine tool accessory manufacturing ecosystem, though buyers should verify current production capacity, quality certification scope, and export documentation capability before committing to volume orders.

Suzhou Rico Machinery Co., Ltd. operates from No.60 Weixin Road, Industrial Park Zone, Suzhou, Jiangsu, 215000, China, within the Suzhou Industrial Park, one of China's established manufacturing zones with particular strength in precision machinery and electronics. The supplier holds an 'imported' supplier tier and 'harbor' trust tier, with a 0.00% response rate and zero recorded average response hours on the platform. This communication profile requires direct outreach to assess technical enquiry handling, quotation responsiveness, and after-sales support capability before order commitment.

The company's product focus is CNC machine tool accessories, specifically precision tool holders for ER collet systems in BT taper configurations. No verified information regarding year of establishment, factory floor area, employee count, annual revenue, ISO certification scope, or specific clientele is available in the source profile. The address corresponds to an industrial zone location, suggesting manufacturing or assembly operations rather than pure trading, though buyers should confirm whether Suzhou Rico Machinery performs in-house precision grinding, heat treatment, and quality inspection, or sources finished holders from subcontractors within the Jiangsu machine tool cluster.