295 Spline Shafts are already hardened, and must be annealed before machining. Annealing may lower hardness on the machined area +10mm fore and aft. (See the examples below). Furthermore, the annealing portions are out of the guaranteed range of O.D. Tolerance. When calculating stroke, count out the dimensions of annealing portions. Approx.10mm Annealing may lower hardness of the following sections: · Threaded Ends · Stepped Parts · Tapped Ends · Wrench flats, set screw flats, retaining ring grooves, tap alteration Approx.10mm Approx.10mm Approx.10mm (Ex.) Annealing Range "MUFSBUJPO 0WFSWJFX 2%JNFOTJPOT PG ,FZXBZT PO UIF 4IBGU &OET 1 BOE 2 b t P, Q C t Tolerance (N9) Tolerance 8, 10 3 -0.004 -0.029 1.8 +0.1 0 12 4 0 -0.030 2.5 13~16 5 3.0 20 6 3.5 25 8 0 -0.036 4.0 +0.2 0 2%JNFOTJPOT PG UIF 3FUBJOJOH 3JOH (SPPWFT PO UIF 4IBGU &OET 1 BOE 2 P, Q m d "QQMJDBCMF Retaining Ring Tolerance Tolerance Tolerance 3 0 -0.010 0.5 +0.05 0 2 +0.06 0 JIS E Type 2 4 0 -0.012 +0.1 0 3 JIS E Type 3 5 0.7 4 +0.075 0 JIS E Type 4 6 5.05 JIS E Type 5 8 0 -0.015 0.9 6.05 JIS E Type 6 10 1.15 +0.14 0 9.6 0 -0.09 JIS C Type 10 12 0 -0.018 11.5 0 -0.11 JIS C Type 12 13 12.4 JIS C Type 13 15 14.3 JIS C Type 15 16 15.2 JIS C Type 16 20 0 -0.021 1.35 19 0 -0.21 JIS C Type 20 25 23.9 JIS C Type 25 m m TA TB d -VCSJDBUJPO 7BSJPVT (SFBTF "QQMJDBUJPO 4FSWJDFT 1BSU /VNCFS BSSS8L-300 BSSS8G-300 (L Type Greased) (G Type Greased) & Please add L or G after part number of Regular Type when placing an order. The Lubricant used for Ball Splines can be changed to any of the following Special Greases. Service is provided to apply grease on nuts and shafts. For performance of each grease, refer to the table below. RPrecautions for Use FFor Particle Generation Amount upon grease application, refer to the "Comparison of Particle Generation (Experimental Values)" section of "Linear Bushings." FIf G Type grease, Low Miscible Consistency grease, is applied onto the small dia. portion (No. 6, 8, or 10), resistance may be increased, and thus, sliding motion may be degraded. Type Grease Product Name Main Features L Type ET−100K (Made by Kyodo Yushi) High heat resistance and oxidation stability. Also high adhesion and cohesion with limited splash or leakage. G Type LG2 (Made by NSK Ltd.) Suitable for clean environment due to low particle generation grease. Highly resistant to corrosion. Ball splines are shipped greased. Administer lubrication maintenance with lithium soap based grease (Alvania Grease S2 by Showa Shell Sekiyu K.K), etc. for a mileage of 100km. Ball Splines Alterations / Grease Application Services
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