SHARS 10PCS CAT40 PULL STUD RETENTION KNOB FITS HAAS CAT 40 CNC 43.18% OFF ^[

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SHARS 10PCS CAT40 PULL STUD RETENTION KNOB FITS<br>HAAS<br>TOSHIBA<br>CAT 40 CNC NEW<br>+ Free Shipping<br>Welcome to Comparison Testing!<br>We don't sell pull stub, we sell pull stub life!<br>Competitors'<br>Regular Price: $ 8.80x5=$88.00<br>Wholesale Price: $50.00, Save: $ 38.00, 43.18% Off<br>Founded in 1978, Shars Tool Company has been serving the industrial community and machine shops in the USA for over 30 years.<br>We carry high<br>quality Pull Stud.<br>Product Code<br>202-5925 (10PCS)<br>Product description<br>Taper: CAT 40<br>A: 45<br>D1 Knob: 0.589"<br>D2 Neck: 0.392"<br>D3 Hole: N/A<br>D4 Pilot:  0.6360"<br>L: 2.250"<br>L1: 0.988"<br>L2 Shou to End: 1.264"<br>Knob Socket: RKW40<br>Product application<br>Product features<br>Shars<br>tools are manufactured by an<br>ISO 9001<br>certified manufacturer with 60 plus years of hands-on experience in<br>the CNC machining industry. Shars tools manufacturer is also an OEM that produces highest quality European<br>brands. The manufacture really pays attention to the details onthe retention knob, as shown here on the flange, the<br>straight neck, and the pilot.  Each knob goes through a magnetic particle test after heat treatingto prevent crack line’s<br>and after this testing procedure, each knob will be precision ground on all critical contact surfaces, including the pilot<br>underneath the flange area.  The pilot will ensure the retention knob body makes a better contact with the tool holder<br>next to the threads which will reduce the vibrationand minimize TIR on the overall system (tools holder + retention<br>knob).<br>Other low price import pull stud are made from<br>45 medium carbon steel<br>, but<br>Shars<br>pull stud is made from fine<br>alloy steel, 20CrMnTi<br>with heat treatment to HRC 56-58<br>,<br>which is equal to<br>USA material 8620,<br>better<br>performance than<br>45 medium carbon steel<br>. The price for 20CrMnTi is double of<br>45 medium carbon steel<br>.<br>After<br>the<br>forging process, the raw material can<br>maintain the mechanical performance and flow line<br>.<br>This will<br>ensure the<br>life and stability of the material, after the material<br>has been run through several heat treatment processes.<br>Using high quality alloy steel 20CrMnTi forging, the material is metallographic dense, uniform and stable.<br>After carburizing, the outside of<br>material is<br>hardened,<br>and the inside of material is still soft and has<br>enough toughness. Therefore, Material has higher wear resistance and better toughness.<br>Other low price import pull stud’s are machined by a turning process, but<br>Shars<br>pull stud’s are fully ground by<br>CNC on all critical surfaces including a pilot<br>under the flange of retention knob for full contact between tool<br>holder's taper end and retention knob. Precision grinding pull stubs have higher surface finish<br>and dimension<br>accuracy<br>.<br>T<br>he fitting accuracy is obviously higher than that of machine pull stubs, effectively reduces the error of<br>machine tool and<br>cooperation, so as to improve the accuracy and stability of the connection and<br>improves the<br>precision of the machine tools and lengthens the service life.<br>Precision finished on the bottom of the flange to improve fitting with the bottom nose of the taper on the tool<br>holder<br>For details of the processing quality of ground pull studs surface finish, please see the following picture<br>which<br>shows the pull stub by half black oxide finish.<br>High quality black oxide finish can ensure long pull stub life and a non-rusting surface. The following picture<br>shows the pull stub after bl