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Standard Handbook for Mechanical Engineers 2010 Part 10

Tham khảo tài liệu 'standard handbook for mechanical engineers 2010 part 10', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | CHAIN 10-5 Table 10.2.1 Grade 80 Alloy Chain Mechanical and Dimensional Requirements Nominal chain size Material diameter Working load limit max Proof test min Minimum breaking force Inside length max Inside width min to max in mm in mm lb kg lb kN lb kN in mm in mm 7 32 5.5 0.217 5.5 2 100 970 4 300 19.0 8 500 38.0 0.693 17.6 0.270 to 0.325 6.87 to 8.25 2 7.0 0.276 7.0 3 500 1 570 7 000 30.8 13 800 61.6 0.900 22.9 0.344 to 0.430 8.75 to 10.92 3 8 10.0 0.394 10.0 7 100 3 200 14 200 63.0 28 300 126.0 1.260 32.0 0.492 to 0.591 12.50 to 15.00 1 2 13.0 0.512 13.0 12 000 5 400 23 900 107.0 47 700 214.0 1.640 41.6 0.640 to 0.768 16.25 to 19.50 5 8 16.0 0.630 16.0 18 100 8 200 36 200 161.0 72 300 322.0 2.020 51.2 0.787 to 0.945 20.00 to 24.00 3 4 20.0 0.787 20.0 28 300 12 800 56 500 252.0 113 000 504.0 2.520 64.0 0.984 to 1.180 25.00 to 30.00 7 8 22.0 0.866 22.0 34 200 15 500 68 400 305.0 136 700 610.0 2.770 70.4 1.080 to 1.300 27.50 to 33.00 1 26.0 1.024 26.0 47 700 21 600 95 400 425.0 191 000 850.0 3.280 83.2 1.280 to 1.540 32.50 to 39.00 P 4 32.0 1.260 32.0 72 300 32 800 144 600 644.0 289 300 1288.0 4.030 102.4 1.580 to 1.890 40.00 to 48.00 The proof test and minimum breaking force loads shall not be used as criteria for service or design purposes. source ASTM and NACM copyright material reprinted with permission. Note that the foregoing expression can also be stated as chain ultimate strength N X dia. 2 X short tons where short tons 2 000. Therefore knowing the value of the constant N and the stock diameter of the chain the minimum ultimate strength can be determined. As an example the ultimate strength of 1 2-in Grade 80 chain can be verified as follows by using the information contained in Table 10.2.1 M 91 lb in2 0.512 in 2 X 2 000 47 700 lb 214 kN While graded steel chains are not classified as calibrated chain since links are manufactured to accepted commercial tolerances they are sometimes used for power transmission in pocket wheel applications. In most such .