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Machining Shapes and Product Identification Code Entry Methods ¡Standard dimensions of BS (counter boring) (Unit: mm) ¡Standard dimensions of DSS and ESS (wrench receptacle machining) (Unit: mm) * Also specify the thread pitch as shown above when fine thread is specified. BGS25-250-3-ES-M8~P1.0~12-DS-M12~15~25 Example 1: Single end: end face threading + single end: stepped threading BGS50-400-3-SK-30~50-KY-15~10~40 Example 3: Single end: wrench receptacle machining + single end: keyway machining BGS20-500-1-BS-20 Example 4: Single end: counter boring W L B . W L B b . L H 90‹ Examples of Product Identification SK Wrench receptacle machining Length BGS D - L - 2 - SK - B ~ . ~ W Parts No. (Shaft dia.) Shape Step 1: Single end, 2: Both ends, 3: Different shapes on both ends Length BGS D - L - 2 -DSS - Md ~.1 ~.2 Parts No. (Shaft dia.) Shape Step 1: Single end, 2: Both ends, 3: Different shapes on both ends DSS Stepped threading with wrench receptacle (Note 2) Length BGS D - L - 2 - KM- H ~. Parts No. (Shaft dia.) Shape Step 1: Single end, 2: Both ends, 3: Different shapes on both ends KM Drilling Length BGS D - L - 2 - SK - B ~ W Parts No. (Shaft dia.) Shape Step 1: Single end, 2: Both ends, 3: Different shapes on both ends SK Wrench receptacle machining Length BGS D - L - 2 -ESS - Md ~. Parts No. (Shaft dia.) Shape Step 1: Single end, 2: Both ends, 3: Different shapes on both ends ESS End face threading with wrench receptacle (Note 2) ƒÓD c a L ƒÓdh7 .1 .2 Md a a . L Md b ƒÓ12h7 M8~1(fine thread) 12 25 M12 15 250 ƒÓ50 40 50 400 10 15 h7 30 ƒÓ14 ƒÓ20 20 500 ƒÓ9 9 ƒÓD ƒÓD ƒÓD ƒÓD œC0.5 unless chamfer dimensions are specified. œAlso specify the thread pitch (Md~P) in the product identification code when fine thread is specified. Note 1: d1, d2 and h of BS (counter boring) are machined in the standard dimensions shown below. BS (counter boring) is applicable to solid shafts (BGS) only. Use hexagonal socket head bolts. Note 2: a, b and c of DSS and ESS (threading with wrench receptacle) are machined in the standard dimensions shown below. ƒÓ10h7 ƒÓ16h7 BGS30-600-3-DS-M10~30~50-DSS-M16~40~50 Example 2: Single end: stepped threading + single end: stepped threading with wrench receptacle 50 500 50 M16 600 27 M10 ƒÓ30 15 5 40 30 ƒÓ25 Shaft dia. ƒÓD 10 40 ƒÓd1 ƒÓd2 h 8 6.5 3.4 3.5 12 9.5 5.5 5.5 16 11 77 20 14 99 25 14 99 30 14 99 35 14 99 17.5 11 11 50 20 14 147 Shaft dia. ƒÓD abc 8875 10 885 12 10 10 5 16 10 14 5 20 10 17 5 25 10 22 5 30 15 27 5 35 15 32 5 40 20 36 10 50 20 41 10 8 4.5 4.5 310 Selection Guide Product Information Plastic Bearing Multi-layer Bearing Metallic Bearing Air Bearings Technical Slide Shifter Information Corporate Profi le