Aurora Bearing Company
Aurora Bearing Company
901 Aucutt Rd.
Montgomery, IL 60538
Phone: 630.859.2030 • Fax: 630.859.0971
Email: customersupport@aurorabearing.com • Website: www.aurorabearing.com
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  • Safe and effective tapered bore bearing assembly.
  • Includes mounting sleeve, locknut and lockwasher or lockplate.
  • Other dimensions may be available, consult your Timken sales representative.

* Adapters with a C1 dimension use a lockplate as the locking device as shown in the illustration; otherwise, a lockwasher is used as the locking device.
Adapter HU Accessory picture
Line Drawing Accessories Sleeves H Adapters
Unit of Measure
1 2 3 

Part Number

d1

L

C

C1

Thread G

D3

Locknut

Lockwasher and Lockplates

Appropriate Hydraulic Nut

CAD

H305 N/A 20 mm N/A 29 mm N/A 8 mm N/A N/A M25x1.5 N/A 38 mm N/A KM5 N/A MB5 N/A N/A CAD Icon (for items table)
H306 N/A 25 mm N/A 31 mm N/A 8 mm N/A N/A M30x1.5 N/A 45 mm N/A KM6 N/A MB6 N/A N/A CAD Icon (for items table)
H307 N/A 30 mm N/A 35 mm N/A 9 mm N/A N/A M35x1.5 N/A 52 mm N/A KM7 N/A MB7 N/A N/A CAD Icon (for items table)
H308 N/A 35 mm N/A 36 mm N/A 10 mm N/A N/A M40x1.5 N/A 58 mm N/A KM8 N/A MB8 N/A N/A CAD Icon (for items table)
H2308 N/A 35 mm N/A 46 mm N/A 10 mm N/A N/A M40x1.5 N/A 58 mm N/A KM8 N/A MB8 N/A N/A CAD Icon (for items table)
H309 N/A 40 mm N/A 39 mm N/A 11 mm N/A N/A M45x1.5 N/A 65 mm N/A KM9 N/A MB9 N/A N/A CAD Icon (for items table)
H2309 N/A 40 mm N/A 50 mm N/A 11 mm N/A N/A M45x1.5 N/A 65 mm N/A KM9 N/A MB9 N/A N/A CAD Icon (for items table)
H310 N/A 45 mm N/A 42 mm N/A 12 mm N/A N/A M50x1.5 N/A 70 mm N/A KM10 N/A MB10 N/A HMV10 N/A CAD Icon (for items table)
H2310 N/A 45 mm N/A 55 mm N/A 12 mm N/A N/A M50x1.5 N/A 70 mm N/A KM10 N/A MB10 N/A HMV10 N/A CAD Icon (for items table)
H311 N/A 50 mm N/A 45 mm N/A 12 mm N/A N/A M55x2 N/A 75 mm N/A KM11 N/A MB11 N/A HMV11 N/A CAD Icon (for items table)
H2311 N/A 50 mm N/A 59 mm N/A 12 mm N/A N/A M55x2 N/A 75 mm N/A KM11 N/A MB11 N/A HMV11 N/A CAD Icon (for items table)
H312 N/A 55 mm N/A 47 mm N/A 13 mm N/A N/A M60x2 N/A 80 mm N/A KM12 N/A MB12 N/A HMV12 N/A CAD Icon (for items table)
H2312 N/A 55 mm N/A 62 mm N/A 13 mm N/A N/A M60x2 N/A 80 mm N/A KM12 N/A MB12 N/A HMV12 N/A CAD Icon (for items table)
H313 N/A 60 mm N/A 50 mm N/A 14 mm N/A N/A M65x2 N/A 85 mm N/A KM13 N/A MB13 N/A HMV13 N/A CAD Icon (for items table)
H314 N/A 60 mm N/A 52 mm N/A 14 mm N/A N/A M70x2 N/A 92 mm N/A KM14 N/A MB14 N/A HMV14 N/A CAD Icon (for items table)
H2313 N/A 60 mm N/A 65 mm N/A 14 mm N/A N/A M65x2 N/A 85 mm N/A KM13 N/A MB13 N/A HMV13 N/A CAD Icon (for items table)
H2314 N/A 60 mm N/A 68 mm N/A 14 mm N/A N/A M70x2 N/A 92 mm N/A KM14 N/A MB14 N/A HMV14 N/A CAD Icon (for items table)
H315 N/A 65 mm N/A 55 mm N/A 15 mm N/A N/A M75x2 N/A 98 mm N/A KM15 N/A MB15 N/A HMV15 N/A CAD Icon (for items table)
H2315 N/A 65 mm N/A 73 mm N/A 15 mm N/A N/A M75x2 N/A 98 mm N/A KM15 N/A MB15 N/A HMV15 N/A CAD Icon (for items table)
H316 N/A 70 mm N/A 59 mm N/A 17 mm N/A N/A M80x2 N/A 105 mm N/A KM16 N/A MB16 N/A HMV16 N/A CAD Icon (for items table)
H2316 N/A 70 mm N/A 78 mm N/A 17 mm N/A N/A M80x2 N/A 105 mm N/A KM16 N/A MB16 N/A HMV16 N/A CAD Icon (for items table)
H317 N/A 75 mm N/A 63 mm N/A 18 mm N/A N/A M85x2 N/A 110 mm N/A KM17 N/A MB17 N/A HMV17 N/A CAD Icon (for items table)
H2317 N/A 75 mm N/A 82 mm N/A 18 mm N/A N/A M85x2 N/A 110 mm N/A KM17 N/A MB17 N/A HMV17 N/A CAD Icon (for items table)
H318 N/A 80 mm N/A 65 mm N/A 18 mm N/A N/A M90x2 N/A 120 mm N/A KM18 N/A MB18 N/A HMV18 N/A CAD Icon (for items table)
H2318 N/A 80 mm N/A 86 mm N/A 18 mm N/A N/A M90x2 N/A 120 mm N/A KM18 N/A MB18 N/A HMV18 N/A CAD Icon (for items table)
H319 N/A 85 mm N/A 68 mm N/A 19 mm N/A N/A M95x2 N/A 125 mm N/A KM19 N/A MB19 N/A HMV19 N/A CAD Icon (for items table)
H2319 N/A 85 mm N/A 90 mm N/A 19 mm N/A N/A M95x2 N/A 125 mm N/A KM19 N/A MB19 N/A HMV19 N/A CAD Icon (for items table)
H320 N/A 90 mm N/A 71 mm N/A 20 mm N/A N/A M100x2 N/A 130 mm N/A KM20 N/A MB20 N/A HMV20 N/A CAD Icon (for items table)
H3120 N/A 90 mm N/A 76 mm N/A 20 mm N/A N/A M100x2 N/A 130 mm N/A KM20 N/A MB20 N/A HMV20 N/A CAD Icon (for items table)
H2320 N/A 90 mm N/A 97 mm N/A 20 mm N/A N/A M100x2 N/A 130 mm N/A KM20 N/A MB20 N/A HMV20 N/A CAD Icon (for items table)
H321 N/A 95 mm N/A 74 mm N/A 20 mm N/A N/A M105x2 N/A 140 mm N/A KM 21 N/A MB21 N/A HMV21 N/A CAD Icon (for items table)
H2321 N/A 95 mm N/A 101 mm N/A 20 mm N/A N/A M105x2 N/A 140 mm N/A KM21 N/A MB21 N/A HMV21 N/A CAD Icon (for items table)
H322 N/A 100 mm N/A 77 mm N/A 21 mm N/A N/A M110x2 N/A 145 mm N/A KM22 N/A MB22 N/A HMV22 N/A CAD Icon (for items table)
H3122 N/A 100 mm N/A 81 mm N/A 21 mm N/A N/A M110x2 N/A 145 mm N/A KM22 N/A MB22 N/A HMV22 N/A CAD Icon (for items table)
H2322 N/A 100 mm N/A 105 mm N/A 21 mm N/A N/A M110x2 N/A 145 mm N/A KM22 N/A MB22 N/A HMV22 N/A CAD Icon (for items table)
H3024 N/A 110 mm N/A 72 mm N/A 22 mm N/A N/A M120x2 N/A 145 mm N/A KML24 N/A MBL24 N/A HMV24 N/A CAD Icon (for items table)
H3124 N/A 110 mm N/A 88 mm N/A 22 mm N/A N/A M120x2 N/A 155 mm N/A KM24 N/A MB24 N/A HMV24 N/A CAD Icon (for items table)
H2324 N/A 110 mm N/A 112 mm N/A 22 mm N/A N/A M120x2 N/A 155 mm N/A KM24 N/A MB24 N/A HMV24 N/A CAD Icon (for items table)
H3926 N/A 115 mm N/A 65 mm N/A 23 mm N/A N/A M130x2 N/A 155 mm N/A KML26 N/A MBL26 N/A HMV26 N/A CAD Icon (for items table)
H3026 N/A 115 mm N/A 80 mm N/A 23 mm N/A N/A M130x2 N/A 155 mm N/A KML26 N/A MBL26 N/A HMV26 N/A CAD Icon (for items table)
H3126 N/A 115 mm N/A 92 mm N/A 23 mm N/A N/A M130x2 N/A 165 mm N/A KM26 N/A MB26 N/A HMV26 N/A CAD Icon (for items table)
H2326 N/A 115 mm N/A 121 mm N/A 23 mm N/A N/A M130x2 N/A 165 mm N/A KM26 N/A MB26 N/A HMV26 N/A CAD Icon (for items table)
H3928 N/A 125 mm N/A 66 mm N/A 24 mm N/A N/A M140x2 N/A 165 mm N/A KML28 N/A MBL28 N/A HMV28 N/A CAD Icon (for items table)
H3028 N/A 125 mm N/A 82 mm N/A 24 mm N/A N/A M140x2 N/A 165 mm N/A KML28 N/A MBL28 N/A HMV28 N/A CAD Icon (for items table)
H3128 N/A 125 mm N/A 97 mm N/A 24 mm N/A N/A M140x2 N/A 180 mm N/A KM28 N/A MB28 N/A HMV28 N/A CAD Icon (for items table)
H2328 N/A 125 mm N/A 131 mm N/A 24 mm N/A N/A M140x2 N/A 180 mm N/A KM28 N/A MB28 N/A HMV28 N/A CAD Icon (for items table)
H3930 N/A 135 mm N/A 76 mm N/A 26 mm N/A N/A M150x2 N/A 180 mm N/A KML30 N/A MBL30 N/A HMV30 N/A CAD Icon (for items table)
H3030 N/A 135 mm N/A 87 mm N/A 26 mm N/A N/A M150x2 N/A 180 mm N/A KML30 N/A MBL30 N/A HMV30 N/A CAD Icon (for items table)
H3130 N/A 135 mm N/A 111 mm N/A 26 mm N/A N/A M150x2 N/A 195 mm N/A KM30 N/A MB30 N/A HMV30 N/A CAD Icon (for items table)
H2330 N/A 135 mm N/A 139 mm N/A 26 mm N/A N/A M150x2 N/A 195 mm N/A KM30 N/A MB30 N/A HMV30 N/A CAD Icon (for items table)
Unit of Measure
1 2 3