Tsubaki Guide to Forestry Products

SPLIT TAPER HUBS“QD” STYLE BUSHINGWhen compatibility really mattersTsubaki offers a complete line of Split Taper style weld-on hubs for insertion and welding to produce “B” style sprockets, sheaves and otherapplications without hub protrusion. To provide greater strength for this type of shaft locking mechanism and reduce heat distortion causedby welding, these hubs are dimensionally the same as our sprocket items. Special dimension hubs are available on a Made-to-Order basis.All Tsubaki hubs are made from steel bar stock (not powdered or sintered metal). The Split Taper style weld-on hubs listed below includeappropriate tapered bores and mounting holes.GLFAll dimensions in inches unless otherwise stated.Tapped HolesHub Bushing WeightO.D. A B C K V W X a( o ) d No. Size (lbs.)G1WH1WP1WP2WB1WB2WQ1WQ2WR1WR2WS1WS2WU0WU1WU2WW1WGHP1P2BBQ1Q2R1R2S1S2U0U1U2W1φ (Bolt Circle)22 ¹⁄₂333 ⁷⁄₈4 ¹⁄₂4 ¹⁄₂4 ¹⁄₂5 ³⁄₄5 ³⁄₄6 ³⁄₄6 ³⁄₄8 ¹⁄₂8 ¹⁄₂8 ¹⁄₂12 ¹⁄₂0.1740.1740.2921.1000.2920.7090.7091.6060.7091.6060.9462.9632.0002.9636.0162.9631.1681.6211.93751.93752.6232.6232.8752.8754.0004.0004.6254.6256.0006.0006.0008.5003/4" Taper per Footon Diameter1.8752.3752.8752.8753.7504.3754.3754.3755.6255.6256.5006.5008.2508.2508.25012.250X--1 ³⁄₃₂1 ³⁄₃₂1 ⁷⁄₁₆1 ⁷⁄₁₆1 ⁹⁄₁₆1 ⁹⁄₁₆2 ³⁄₁₆2 ³⁄₁₆2 ⁹⁄₁₆2 ⁹⁄₁₆3 ¹⁄₄3 ¹⁄₄3 ¹⁄₄4 ⁹⁄₁₆A1 ⁹⁄₁₆22 ⁷⁄₁₆2 ⁷⁄₁₆3 ¹⁄₈3 ¹⁄₈3 ³⁄₈3 ³⁄₈4 ⁵⁄₈4 ⁵⁄₈5 ³⁄₈5 ³⁄₈77710φ (Bolt Circle)--³⁄₈³⁄₈¹⁄₂¹⁄₂¹⁄₂¹⁄₂³⁄₄³⁄₄³⁄₄³⁄₄1 ¹⁄₄1 ¹⁄₄1 ¹⁄₄1 ¹⁄₄a⁵⁄₈⁷⁄₈1 ⁵⁄₁₆2 ⁵⁄₁₆1 ⁵⁄₁₆1 ³⁄₄1 ³⁄₄2 ³⁄₄243 ⁵⁄₁₆5 ¹¹⁄₁₆3 ³⁄₄5 ⁵⁄₈8 ⁵⁄₈6 ³⁄₈3/4" Taper per Footon DiameterK--6060606060606060606060606022 ¹⁄₂⁵⁄₈⁷⁄₈⁵⁄₈⁵⁄₈¹³⁄₁₆¹³⁄₁₆⁷⁄₈⁷⁄₈1 ¹⁄₈1 ¹⁄₈1 ⁵⁄₈1 ⁵⁄₈21 ³⁄₄1 ³⁄₄1 ³⁄₄XA2233333333333334¹⁄₄ - 20¹⁄₄ - 20⁵⁄₁₆ - 18⁵⁄₁₆ - 18⁵⁄₁₆ - 18⁵⁄₁₆ - 18³⁄₈ - 16³⁄₈ - 16³⁄₈ - 16³⁄₈ - 16¹⁄₂ - 13¹⁄₂ - 13⁵⁄₈ - 11⁵⁄₈ - 11⁵⁄₈ - 11³⁄₄ - 10Bolt Sizea0.40.61.42.52.34.74.46.97.31517303245691303/4" Taper per Footon DiameterKXABUSHINGS JA TO JASME (ANSI) “QD” Style BushingsBUSHINGS M TO N] Bolt Cap Screws Standard Shallow Without WeightBushing A B D F G L Circle Required Keyway Keyway Keyway (lbs.)JASHSDSSDSKSFEFJMN⁵⁄₁₆⁷⁄₁₆⁷⁄₁₆⁷⁄₁₆⁹⁄₁₆⁵⁄₈⁷⁄₈11¹⁄₈1¹⁄₄1¹⁄₂1³⁄₈1⁷⁄₈2³⁄₁₆2³⁄₁₆2¹³⁄₁₆3¹⁄₈3⁵³⁄₆₄4⁷⁄₁₆5⁹⁄₆₄6¹⁄₂722⁵⁄₈3³⁄₁₆3³⁄₁₆3⁷⁄₈4⁵⁄₈66⁵⁄₈7¹⁄₄910⁹⁄₁₆³⁄₄³⁄₄1¹⁄₄1¹⁄₄1¹⁄₄1⁵⁄₈2¹⁄₂3³⁄₁₆5³⁄₁₆6¹⁄₄¹⁄₈¹⁄₈¹⁄₈¹⁄₈⁷⁄₃₂⁷⁄₃₂¹⁄₄¹¹⁄₃₂³⁄₈¹³⁄₃₂⁹⁄₁₆11⁵⁄₁₆1⁵⁄₁₆1¹³⁄₁₆1¹⁵⁄₁₆2¹⁄₁₆2³⁄₄3³⁄₄4⁵⁄₈6³⁄₄8¹⁄₈1²¹⁄₃₂2¹⁄₄2¹¹⁄₁₆2¹¹⁄₁₆3⁵⁄₁₆3⁷⁄₈55⁵⁄₈6¹⁄₄7⁷⁄₈8¹⁄₂(3) #10 x 1(3) ¹⁄₄ x 1³⁄₈(3) ¹⁄₄ x 1³⁄₈(3) ¹⁄₄ x 1⁷⁄₈(3) ⁵⁄₁₆ x 2(3) ³⁄₈ x 2(3) ¹⁄₂ x 2³⁄₄(3) ⁹⁄₁₆ x 3⁵⁄₈(3) ⁵⁄₈ x 4¹⁄₂(4) ³⁄₄ x 6³⁄₄(4) ⁷⁄₈ x 8¹⁄₂—1¹⁄₂—1³⁄₈¹⁄₂—1¹¹⁄₁₆¹⁄₂—1¹¹⁄₁₆¹⁄₂—2¹⁄₈¹⁄₂—2⁵⁄₁₆⁷⁄₈—2⁷⁄₈1—3¹⁄₄1¹⁄₂—3⁷⁄₈2—4³⁄₄2⁷⁄₁₆—5¹⁄₈All bushings can be supplied in steel, stainless steel and other materials. Consult Tsubaki for more details.] Available Upon RequestDBAAll dimensions in inches unless otherwise stated.1¹⁄₁₆—1³⁄₁₆1⁷⁄₁₆—1⁵⁄₈1³⁄₄—1¹⁵⁄₁₆1³⁄₄—1¹⁵⁄₁₆2³⁄₁₆—2¹⁄₂2³⁄₈—2¹³⁄₁₆2¹⁵⁄₁—3¹⁄₂3⁵⁄₁₆—3¹⁵⁄₁₆3¹⁵⁄₁₆—4¹⁄₂4⁷⁄₈—5¹⁄₂5³⁄₁₆—5¹⁄₂1¹⁄₄1¹¹⁄₁₆222⁹⁄₁₆—2⁵⁄₈2¹³⁄₁₆—2¹⁵⁄₁₆—4———0.80.71.01.02.13.12.13.116.856.068.0ODBCODBCODBC3/4" X Taper per Footon DiameterAφ (Bolt Circle)XAaBolt SizeFor Bushings and3/4" Taper per Footφ (Bolt Circle)on DiameterK ad3/4" X Taper per Footon DiameterAKBolt XSizeABolt SizedFor Bushings P, B, Q, R, S, and Ua3/4" Bolt Taper Sizeper Footon DiameterKa3/4" X Taper per Footon DiameterAKφ (Bolt Circle)XAFor Bushing WdMetric “QD” Style BushingsAll dimensions in inches unless otherwise stated.Bore Range 24 25 28 30 32 35 38 40 42 45 48 50 55 60 65 70 75 80 85 90 95 100Keyway(mm)Bushing 8x3.3 8x3.3 8x3.3 8x3.3 10x3.3 10x3.3 10x3.3 12x3.3 12x3.3 14x3.3 14x3.3 14x3.3 16x4.3 18x4.4 18x4.4 20x4.9 20x4.9 22x5.4 22x5.4 25x5.4 25x5.4 28x6.4SH X X X X X XSDS X X X X X X X X X XSD X X X X X X X X XSK X X X X X X X X X X X X XSF X X X X X X X X X X X XE X X X X X X X X X X X XF X X X X X X X X X X XJ X X X X X X X X X X XNote - X denotes that the QD Bushing is also available with metric bore size key way.All metric bores are supplied with imperial threads.All bushings can be supplied in steel, stainless steel and other materials. Consult Tsubaki for more details.CBODCODBCBODCODBCBCdBolt SizedBolt SizedBolt Sizeφ (BoltdCircle)φ (Bolt Circle)ddFor BushingsandFor Bushings P, B, Q, R, S, For and Bushings U P, B, Q, R, S, and UFor Bushing WFor Bushing W82 83