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Deflection Calculations Examples of calculations of the profile deflection Example 1 Example 2 Example 3 Type of linear unit: WH80 Load case: Case 1 - profile supported in both ends and fixed at both sides. Load to be moved by carriage: mext = 150 kg Distance between supports: Lf = 600 mm Specific unit data: m’100 = 0,93 kg mc = 2,75 kg EAl = 70000 N/mm2 Iy = 1,93 × 106 mm4 b = 0,0005 Calculated values: fh = 0,3 mm fmax = 0,013 mm Conclusion: fh > fmax = deflection OK www.danahermotion.com Type of linear unit: M55 (MF06B) Load case: Case 2 - profile supported in both ends and fixed at one side. Load to be moved by carriage: mext = 100 kg Distance between supports: Lf = 600 mm Specific unit data: m’100 = 0,53 kg mc = 1,2 kg EAl = 70000 N/mm2 Iy = 4,59 × 105 mm4 b = 0,0005 Calculated values: fh = 0,3 mm fmax = 0,063 mm Conclusion: fh > fmax = deflection OK Type of linear unit: WM80 Linear Units Load case: Case 3 - profile supported and fixed at one end. Load to be moved by carriage: mext = 120 kg Distance between supports: Lf = 400 mm Specific unit data: m’100 = 1,08 kg mc = 4,26 kg EAl = 70000 N/mm2 Iy = 1,85 × 106 mm4 b = 0,0003 Calculated values: fh = 0,12 mm fmax = 0,203 mm Conclusion: fh > fmax = deflection not OK 199
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