String Book - Logan Oil Tools

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Logan SerieS 70 Short catch overShotS
CALCuLAtED StREngthS
Maximum Catch Size (Basket) 4-3/4 6 6-1/4 6-1/2 7 7-3/4 8
overshot o.D. 6-5/8 7-5/8 7-7/8 8-1/4 8-1/2 9-1/4 9-3/4
Complete Assembly Logan part no. 70-66 -A 70-76 -A 70-787-A 70-8 5-A 70-850-A 70-9 5-A 70-975-A
Bowen No. 11303 11630 16975 38939 20050 25030 20060
Bowl Logan part no. C 0 C 0 C 0 C 0 C 0 5 C 0 6 C 0 7
Bowen No. 11305 11632 16977 38941 20052 25032 20062
Basket grapple Load Capacity @ yield point (lbs):
Max. Capacity with Stop 579,400 358,000 349,200 … 285,100 … …
Min. Capacity Without Stop 720,600 445,300 445,700 445,100 373,700 391,700 445,100
Max. Make-up torque 50% of yield (ft/lbs) … 12,500 … 22,000 24,200 27,800 30,800
Maximum Catch Size (Basket) 9 13-3/8
overshot o.D. 11-1/4 16
Complete Assembly Logan part no. 70- 5-A 70- 600-A
Bowen No. 33878 …
Bowl Logan part no. C 0 8 C 0 9
Bowen No. 33880 …
Basket grapple Load Capacity @ yield point (lbs):
Max. Capacity with Stop … …
Min. Capacity Without Stop 874,800 …
Max. Make-up torque 50% of yield (ft/lbs) 42,000 55,500
Notes:
1) All strengths are calculated theoretical yield points and are accurate within 20%. All strengths assume a straight, steady pull and
full grapple engagement of a round fish. Anything less than straight pulling or full engagement will substantially reduce the strength.
2) No tong marks should be applied to the bowl. Tong marks and other surface damage to the bowl will also reduce the strength.
3) Maximum recommended makeup torque is 50% of yield. Less torque may be used depending upon the situation.
4) Jarring may amplify the pull load by a factor of 3 to 10.