 亂DO!BOOK丒儁乕僕儕儞僋亃 bearing丂丂丂326 / 392 BOOK傪傒傞 10昩屻偵BOOK偺儁乕僕偵堏摦偟傑偡 Setting Driving Force And Calculating Service Life Setting Driving Force Formula for calculating loads and driving forces Coefficient of friction 兪 0.17 Installation condition Erecting Lateral Hanging Type S Type 0.15 0.30 0.15 Others 仸Do not use the STC20 or SE type in the lateral or hanging condition. The driving forces differ with the shift table installation conditions and types of the slide shifters. The typical load conditions and examples of calculating the driving forces are shown below. Take note of them. When setting the driving force, find the load applied to each table first using the formula shown below, and select a proper table in the allowable load table of each series. Then, calculate the driving force from the found load using the formula shown below. 仭Four erecting dual-axis tables 仭Four erecting dual-axis tables 仭Four lengthwise vertical 丂dual-axis tables 仭Four lengthwise horizontal 丂dual-axis tables Load calculation Application form Formula Driving force Application form calculation Formula Driving force calculation Formula Load calculation Formula S Type A=B=C=D=W/2亊L3/L1 E=W/2亄W亊L2/L0 乮L2亜L0/2乯 G=亅W/2+W亊L2/L0 F=H=O 乮L0/2亜L2乯 F=亅W/2+W亊L2/L0 G=H=O 乮L0/2亖L2乯 G=F=H=O B Type A=B=C=D=W/2亊L3/L1 E=H=W/4亄W/2亊L2/L0 F=G=亅W/4亄W/2亊L2/L0 S Type A=B=C=D=W/2亊L2/L0 E=G=W亊L3/L1 F=H=O A=W/4亅W/2亊L0/L1 B=W/4亅W/2亊L0/L1 C=W/4亄W/2亊L0/L1 D=W/4亄W/2亊L0/L1 Driving force = F, safety ratio = S (standard value: 1.5 to 2.5) F = (兪1A亄兪2B亄兪3C亄兪4D亄nFs) 亊 俽 The obtained value is a practical driving force. This formula applies to the case where the driving force position is at the table center. Driving force = F, safety ratio = S (standard value: 1.5 to 2.5) F = (兪1A亄兪2B亄兪3C亄兪4D亄nFs亄 (仸nMs) 亄兪1E亄兪2F亄兪3G亄兪4H) 亊 俽 Add the (*nMs) value when the metal scraper is used. The obtained value is a practical driving force. 亇W (weight) is added to the value of the lengthwise vertical tables. This formula applies to the case where the driving force position is at the table center. A=W/4亄W/2亊L2/L0亅W/2亊L3/L1 B=W/4亅W/2亊L2/L0亅W/2亊L3/L1 C=W/4亅W/2亊L2/L0亄W/2亊L3/L1 D=W/4亄W/2亊L2/L0亄W/2亊L3/L1 B Type A=B=C=D=W/2亊L2/L0 E=F=G=H=W/2亊L3/L1 A to H: Load applied to each table 兪=Coefficient of friction乮兪1 and 兪2 are coefficient of frictions of the tables.) n: Number of tables Fs: Seal friction, Ms: Metal scraper friction See the description for the values of Fs and Ms. L1 L0 A B D W C L3 G C L0 L2 L1 H D B A F E W L1 L0 L3 L2 A B D C W W L1 L3 G C H D B F A E L2 L0 325Selection Guide Product Air Bearings Metallic Bearing Multi-layer Bearing Plastic Bearing Information Technical Corporate Profi le Information Slide Shifter