Back Mount Installation Dimensions Face Mount 1Cap Screws Supplied with Face Mount Bushings. Stainless Steel Liner Bushings for Fixture Plates Liner Dimensions Locating repeatability will determine if one primary and one secondary or two primary liners are needed. With two primary liners, repeatability of ±0.0005" can be maintained if the two holes for receiver bushings are held to a centerline distance of ±0.0002" tolerance. Two styles of receiver bushings are available. Generally, the face mount receiver bushing is utilized in blind hole applications (Slip Fit). The back mount receiver bushing is used in through hole applications (Light Press Fit). Note: Installed bushings should be approximately .012" below subplate surface. See reference below for installation of back mount style bushings. Stainless Steel Receiver Bushings Note on Installation of Press Fit Liners & Back Mount Style Receiver Bushings: To alleviate the possibility of binding the shank in the bore, the maximum interference t between bore and bushing O.D. should not exceed .0005". Back Mount Face Mount Face Mount Bushing Installation Instructions Back Mount Bushing Installation Instructions Shank Dia. (mm) Face Mount Part Number Actual O.D. +0.0000 -0.0004 Clearance Drill Diameter E Bore +0.0005 -0.0000 F Depth +0.002 -0.000 G Tap Size & Depth1 H Bolt Circle Diameter 3 PL Equally Space Min. Subplate Thickness D Shank Dia. (mm) Back Mount Part Number Actual O.D. +0.0000 -0.0004 A Depth +0.000 -0.002 B C-Bore ±0.006 C Min. Subplate Thickness D 13 49506SS 1.3750 11/16 1.3750 0.469 8-32x5/16 0.984 3/4 13 49516SS 0.7870 .277 1.000 3/4 16 49507SS 1.4370 13/16 1.4370 0.469 8-32x5/16 1.125 3/4 16 49517SS 0.8760 .285 1.155 3/4 20 49501SS 1.6873 13/16 1.6873 0.637 10-32x3/8 1.362 1 20 49511SS 1.0950 .345 1.280 7/8 25 49502SS 2.0623 1 2.0623 0.799 1/4-28x1/2 1.644 1-1/4 25 49512SS 1.3763 .416 1.593 1 30 49503SS 2.2654 1 3/16 2.2654 0.871 1/4-28x3/4 1.876 1-3/8 30 49513SS 1.6264 .432 1.906 1-1/4 35 49504SS 2.6873 1 9/16 2.6873 0.904 5/16-24x7/8 2.178 1-1/2 35 49514SS 1.8764 .493 2.155 1-5/16 50 49505SS 3.4998 2 5/32 3.4998 1.239 3/8-24x1 2.916 2 50 49515SS 2.6269 .621 2.988 1-3/4 Fixture Plate Thickness ±0.005 Shank Diameter (mm) Primary Liner Part Number Secondary Liner Part Number Liner O.D. +0.0000 -0.0004 Fixture Plate Thickness ±0.005 Shank Diameter (mm) Primary Liner Part Number Secondary Liner Part Number Liner O.D. +0.0000 -0.0004 .50 13 49705SS 49805SS 0.7518 1.00 30 49722SS 49822SS 1.7523 .75 13 49706SS 49806SS 0.7518 .75 35 49731SS 49831SS 1.7523 .50 16 49707SS 49807SS 1.0018 1.00 35 49732SS 49832SS 1.7523 .75 16 49708SS 49808SS 1.0018 1.50 35 49733SS 49833SS 1.7523 .75 20 49701SS 49801SS 1.3772 2.00 35 49734SS 49834SS 1.7523 1.00 20 49702SS 49802SS 1.3772 .75 50 49741SS 49841SS 2.5025 .75 25 49711SS 49811SS 1.3772 1.00 50 49742SS 49842SS 2.5025 1.00 25 49712SS 49812SS 1.3772 1.50 50 49743SS 49843SS 2.5025 .75 30 49721SS 49821SS 1.7523 2.00 50 49744SS 49844SS 2.5025 QUICK CHANGE FIXTURING - ZERO POINT MOUNTING SYSTEM Phone: 877-426-2504 | Fax: +1 216-481-6193 | E-mail: info@jergensinc.com | www.jergensinc.com W21-P1 QUICK CHANGE FIXTURING - BALL LOCK® MOUNTING SYSTEM 21 INCH FIXTURE/SUBPLATES workholding solutions BALL LOCK® MOUNTING SYSTEM
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