Companion Flanges

SERIESO.D.PILOTSB.C.QTYSIZESPLINEOVERALLTHRUHUBSURFACEPART NUMBER
 FP BCBHBH LL1H  
11003.5002.250F2.7504.3131.00-.25k2.1251.5001.8750TURNED1-1-143
13103.8752.375F3.1254.3750.87-132.000 2.4375TURNED131N-20-13420
13103.8752.375F3.1254.3751.50-.37K2.6252.0002.3750GROUND2-1-684
13103.8752.375F3.1254.3911.50-102.3131.7802.2090GROUND131N-20-5680
13103.8752.375F3.1254.4061.75-132.3752.281 TURNED131N-20-12900
13504.6252.750F3.7504.4381.003.4382.6252.8750TURNED3-1-303
13504.6252.750F3.7504.4381.18-62.0001.4691.6920POLISHED135N-20-8300
13504.6252.750F3.7504.4381.37-.31K2.5632.0002.8750TURNED135N-20-9410
13504.6252.750F3.7504.4381.37-.31K2.5602.0002.8750TURNED135N-20-9910
13504.6252.750F3.7504.4381.37-.37K2.5632.0002.2500GROUND135N-1-584
13504.6252.750F3.7504.4381.37-102.4382.0002.1094GROUND3-1-2011
13504.6252.750F3.7504.4381.37-102.4382.0002.1094GROUND141N-20-10910
13504.6252.750F3.7504.4381.37-102.4382.0002.1250GROUND3-1-751
13504.6252.750F3.7504.4381.37-102.6882.0002.0000TURNED141N-20-12370
13504.6252.750F3.7504.4381.37-102.6882.0002.1250TURNED141N-20-12380
13504.6252.750F3.7504.4531.37-103.0002.0002.1300POLISHED3-1-3451X
13504.6252.750F3.7504.4381.40-322.5002.0002.1250POLISHED135N-20-12560
13504.6252.750F3.7504.4531.50-.373.0602.1902.2500GROUND135N-20-7030
13504.5632.750F3.7504.4381.50-.37K2.0002.0002.8750TURNED3-1-1013-8
13504.6252.750F3.754.4381.50-102.2501.7502.1875 135N-20-15320
13504.6252.750F3.7504.4381.50-102.4382.0002.1250GROUND3-1-2431
13504.6252.750F3.7504.4381.50-102.5632.0002.1250GROUND3-1-2181
13504.6252.750F3.7504.4381.50-102.5632.0002.1250GROUND3-1-1151
13504.6252.750F3.7504.4531.50-102.6251.7502.2550GROUND135N-20-4520
13504.6252.750F3.7504.4381.50-102.6882.0002.1250POLISHED141N-20-12390
13504.6252.750F3.7504.4381.50-102.6882.0002.1875TURNED135N-20-13110
13504.6252.750F3.7504.4531.50-103.0602.1882.2550GROUND135N-20-0350
13504.5632.750F3.754.4381.50-172.0001.9342.8750 135N-20-15270
13504.0632.750F3.7504.4381.62-.31K3.4382.6252.4380TURNED135N-20-8570
13504.6252.750F3.7504.4381.75-.37K3.4382.6252.8750TURNED135N-20-9900
13504.5632.750F3.7504.4381.75-.43K3.0002.250 ROUGH135N-20-7840
13504.6252.750F3.7504.4381.75-102.4382.0002.6250GROUND141N-1-3571
13504.6252.750F3.7504.4381.75-102.4382.0002.6250GROUND3-1-3571
13504.6252.750F3.7504.4381.75-102.8132.1882.2500GROUND3-1-3211
13504.6252.750F3.7504.4381.75-102.8752.2502.5000TURNED3-1-3111
13504.6252.750F3.7504.4381.75-102.8752.2502.5000GROUND3-1-3121X
13504.6252.750F3.7504.4381.75-103.1252.2502.6250GROUND3-1-1521
13504.5632.750F3.75047/16-2012.25-.50K3.0003.0004.5625TURNED3-1-1023-10
14805.8753.750F4.7504.5001.75-102.8752.7452.6250GROUND148N-20-16630
15505.8753.750F4.7504.5001.25-102.0001.7502.5000TURNED148N-20-5120
15505.8753.750F4.7540.51.37-102.1252.1252.1250 4-1-1011
15505.8753.750F4.7504.5001.37-102.6252.0002.1094GROUND4-1-3151
15505.7503.750F4.7504.5001.37-102.6302.0002.1280GROUND155N-20-6980
15505.8753.750F4.7504.5001.50-102.5002.0002.2410GROUND148N-1-3441
15505.8753.750F4.7504.5001.50-102.5002.0002.2500GROUND4-1-3441
15505.8753.750F4.7504.5001.50-102.6252.0002.1250GROUND4-1-2701
15505.7503.750M4.7504.5001.517-352.5002.0002.1250GROUND155N-20-14320
15505.7503.750M4.7504.5001.52-352.5002.0002.5000POLISHED155N-20-13640
15505.8753.750F4.7504.5001.62-102.7502.1252.3750GROUND4-1-2751
15505.8753.750F4.7504.5001.75-102.6882.0632.5000TURNED155N-20-13430
15504.7503.750M4.7504.5001.78-342.5002.0002.5000GROUND155N-20-14260
15505.7503.750M4.754.5001.79-343.3132.2502.5000 155N-20-15470
15505.7503.750F4.7504.5001.79-342.5002.0002.5000GROUND155N-20-16720
15505.8753.750F4.7504.5002.00-103.6253.0002.9375GROUND4-1-2361
15505.8753.750F4.7504.5002.00-63.6252.2503.0030POLISHED148N-1-720W
15505.8753.750F4.7504.5002.16-.63K3.5003.5003.7500GROUND155N-20-12280
15505.8753.750F4.7504.5002.25-102.6252.0002.7968GROUND4-1-2591
15505.8753.750F4.7504.5002.25-103.6883.0003.5000GROUND155N-20-12270
16106.8756.625F6.1258.3751.253.5003.5005.2500TURNED16N-1-873
16106.8756.625F6.1258.3881.271-192.5601.4401.9000TURNED161N-20-15640
16106.8756.625M6.1258.3751.50-102.7502.0632.2500TURNED16N-20-13500
16106.8756.625F6.1258.3751.50-102.7502.0632.2500 16N-1-1291
16106.8756.625F6.1258.3751.50-102.9382.1882.1250GROUND16N-20-6960
16106.8756.625F6.1258.3751.75-102.5632.0002.2550POLISHED16N-1-611M
16106.8756.625F6.1258.3751.75-102.8132.2503.0000GROUND16N-1-611
16106.8756.625F6.1258.3751.75-102.9382.1882.2550GROUND16N-20-6950
16106.8756.625F6.1258.3751.75-102.9382.2502.7500GROUND16N-1-2321
16106.8756.625F6.1258.3751.78-344.2502.7812.5625GROUND16N-1-5121X
16106.8756.625F6.1258.3751.96-103.0002.2502.5000GROUND16N-1-4291
16106.8756.625F6.1258.3752.00-103.6253.0002.7500GROUND16N-1-3141
16106.8756.625F6.1258.3752.12-.50K3.5003.5005.2500TURNED16N-1-873-2
16106.8756.625F6.1258.3752.14-413.7502.5002.9400POLISHED16N-20-1
16106.8756.625F6.1258.3752.21-64.4693.2503.0000GROUND16N-1-2211
16106.8756.625M6.1258.3752.22-63.8753.2503.0000GROUND16N-1-2541
16106.8756.625F6.1258.3752.25-103.6253.0003.5050POLISHED16N-1-1581
16106.8756.625F6.1258.3752.44-63K3.5003.5005.2500TURNED16N-1-873-5
16106.8756.625F6.1258.3752.75-103.6883.0003.5000TURNED16N-20-12240
16106.8756.625F6.1258.3752.94-.63K3.0003.4065.2500 16N-20-12190
17108.0007.750F7.2508.3751.53-144.2502.0003.0000TURNED17N-20-3070
17108.0007.750F7.2508.3751.78-343.9062.7502.5625GROUND17N-1-4701X
17108.0007.750F7.2508.3751.96-102.6882.0632.6250GROUND17N-1-2131
17108.0007.750F7.2508.3751.96-102.6882.2502.6250GROUND17N-1-5241
17108.0007.750F7.2508.3752.00-.50K3.6883.0003.2500GROUND17N-1-1144
17108.0007.750F7.2508.3752.00-103.2502.5632.7500GROUND17N-1-2791
17108.0007.750F7.2508.3752.00-103.4382.2502.7500GROUND17N-20-7150
17108.0007.750F7.2508.3752.00-103.6883.0002.7500GROUND17N-1-2221
17108.0007.750F7.2508.3752.00-103.6883.0002.9450GROUND17N-20-7610
17108.0007.750F7.2508.3752.18-.50K4.0004.0006.3750TURNED17N-20-12580
17108.0007.750F7.2508.3752.25-.56K3.6883.0003.5546GROUND17N-1-1074
17108.0007.750F7.2508.3752.25-.63K4.0004.0006.3750TURNED17N-20-12570
17108.0006.438M7.25083/8-242.25-104.9693.0003.5000GROUND17N-1-4131
17108.0007.250F7.2508.3752.25-103.6883.0003.5000GROUND17N-1-951
17108.0007.750F7.2508.3752.25-104.4383.6253.0000GROUND17N-1-4301
17108.0007.750F7.2508.3752.39-464.5943.3753.5000GROUND17N-1-4671
17108.0007.750F7.2508.3772.50-103.6202.4103.5000GROUND17N-20-14120
17108.0006.437M7.2508.3752.50-103.3132.6882.7530GROUND17N-20-1610
17108.0007.750F7.2508.3752.68-.62K4.0004.0006.3750TURNED17N-20-8530
17108.0007.750F7.2508.4532.68-.75K3.9063.9066.3750TURNED17N-20-4100
17108.0007.750F7.2508.3752.75-103.6883.0003.5000GROUND17N-10-2320
17108.0008.000M7.2508.3752.75-103.6883.0003.5000GROUND17N-1-2381
17108.0007.750F7.2508.3753.93-.75K4.0004.0006.3750TURNED17N-20-8540
17108.0007.750F7.2508.3753.91-1.00K4.0004.0006.3750TURNED17N-20-8550
17108.0007.750F7.2508.3753.93B4.0004.0006.3750TURNED17N-20-11770
17108.0005.250F7.2508.4383.94-1.00K4.0003.5006.3750TURNED17N-20-12300
18108.0007.750F7.25012.4382.00-103.6253.0003.5000GROUND18N-1-1601X
18108.0007.750F7.25012.4382.00-103.6883.0002.9375GROUND18N-1-221
18108.0007.750F7.25012.4382.25-103.6883.0003.5000GROUND18N-1-151
18108.0007.750F7.25012.4382.36-184.0313.3753.5000GROUND18N-1-1801
18108.0007.750F7.25012.4382.37-20 2.3443.5000GROUND18N-1-2161
18108.0007.750F7.25012.4382.50-.62K4.0004.0006.3750TURNED18N-1-533-2
18108.0007.750F7.25012.4382.75-103.6883.1253.7500POLISHED18N-1-1651
18108.0007.750F7.25012.4382.75-104.0603.0003.5000POLISHED18N-1-741
18108.0007.750F7.25012.4383.00-.75K4.0004.0006.3750TURNED18N-1-533-5
18108.0007.750F7.25012.4383.00-103.7503.0604.0030GROUND280.03021
18108.0007.750F7.25012.4383.44-.88K4.0004.0006.3750TURNED18N-20-9400
18108.0007.750F7.725127/16-203.506.0006.0008.0000 18N-1-543
18108.0007.750F7.25012.4383.50-.87K4.0603.0005.7500TURNED18N-20-2740
18108.0007.750F7.25120.443.94-1.00K8.0008.0006.3750 18N-20-15330
18108.0007.750F7.25012.4383.94-1.00K4.0004.0006.3750TURNED18N-1-533-7
18809.4697.000F8.2508.6252.50-104.7503.0003.5050POLISHED185N-1-81
18809.4697.000F8.2508.6252.75-104.1883.1253.7530GROUND8-1-201JN
18809.6257.000F8.2508.6252.75-104.1883.2503.7500GROUND185N-1-211X
18809.3107.000F8.2508.6253.00-104.7503.0004.0000POLISHED185N-20-16110
18808.0007.750F8.2508.6253.50-.875K5.0004.8756.8750TURNED185N-20-15910
18809.6257.000F8.2508.6253.94-1.00K5.0005.0006.8750 185N-1-333-5
18809.5637.000F8.2508.6254.00-1.00K5.004.8756.8750 185N-20-15900
 4.7203.126M3.96947/16-201.60-153.1561.7502.1270GROUND20-4080
 5.9702.250M5.00060.51.75-102.2502.2501.9750TURNED20-8100
 8.0006.438M7.25083/8-241.75-103.6882.0003.1250TURNED20-12930
 5.9053.543M5.1188.4831.25-133.4692.6773.3400TURNED20-8180
 6.0005.625F4.70061/2-201.75-63.8752.2502.5000 20-11310
 6.2255.087M5.58612.3442.00-103.0003.0002.7510GROUND20-2730
 7.7507.750M6.2504.8752.00-103.8753.0003.2530GROUND5WCS32-60
 8.5005.875M7.25012.6562.02-393.1252.4372.7500GROUND20-0050
 5.9063.543M5.1188.4762.04-153.5402.7503.3438TURNED20-13050
 7.0934.329F6.1228.5632.50-103.5003.3755.2500 20-11580
 9.8435.512M8.5848.7082.75-104.0003.0003.7550GROUND20-5690

Standard Flange – SF

Rough Bore Diameter 3/4" 3/4" 1 1/4" 1 1/4" 1 1/4" 1 1/4"
Max Bore & Key 1 11/16" x 3/8" 1 7/8" x 1/2" 2 7/16" x 5/8" 3" x 3/4" 4" x 1" 4" x 1"
Number of Bolts 4 4 4 8 8 12
Thread Size 3/8"-24 7/16"-20 1/2"-20 3/8"-24 3/8"-24 7/16"-20
Bolt Circle 3 1/8" 3 3/4" 4 3/4" 6 1/8" 7 1/4" 7 1/4"
Pilot Diameter 2 3/8" 2 3/4" 3 3/4" 6 5/8" 7 3/4" 7 3/4"
Outside Diameter 3 7/8" 4 9/16" 5 7/8" 6 7/8" 8" 8"
Overall Length 2" 2" 2 1/2" 3 1/2" 4" 4"

Special Large Flange – SLF

Rough Bore Diameter 1 3/8" 1 3/4" 2 3/8" 3" 3 1/2" 3 1/2"
Max Bore & Key 2 3/8" x 5/8" 3" x 3/4" 3 3/4" x 1" 4 1/2" x 1" 5 1/2" x 1 1/4" 5 1/2" x 1 1/4"
Number of Bolts 4 4 4 8 8 12
Thread Size 3/8"-24 7/16"-20 1/2"-20 3/8"-24 3/8"-24 7/16"-20
Bolt Circle 3 1/8" 3 3/4" 4 3/4" 6 1/8" 7 1/4" 7 1/4"
Pilot Diameter 2 3/8" 2 3/4" 3 3/4" 6 5/8" 7 3/4" 7 3/4"
Outside Diameter 3 7/8" 4 9/16" 5 7/8" 6 7/8" 8" 8"
Overall Length 2 1/2" 3" 3 1/2" 5" 6" 6"

Common Standard Flanges

Bore Key 1310 1350/1410 1480/1550 1610 1710 1810
1″ 1/4″ 31SF-1.00-25 35SF-1.00-25        
1-1/8″ 1/4″ 31SF-1.12-25 35SF-1.12-25        
1-1/4″ 1/4″ 31SF-1.25-25 35SF-1.25-25        
1-1/4″ 5/16″ 31SF-1.25-31 35SF-1.25-31        
1-3/8″ 5/16″ 31SF-1.37-31 35SF-1.37-31        
1-3/8″ 3/8″ 31SF-1.37-37 35SF-1.37-37        
1-7/16″ 3/8″ 31SF-1.43-37 35SF-1.43-37        
1-1/2″ 3/8″ 31SF-1.50-37 35SF-1.50-37 48SF-1.50-37      
1-5/8″ 3/8″ 31SF-1.62-37 35SF-1.62-37 48SF-1.62-37      
1-11/16″ 3/8″ 31SF-1.68-37 35SF-1.68-37 48SF-1.68-37      
1-3/4″ 3/8″ 31SLF-1.75-37 35SF-1.75-37 48SF-1.75-37      
1-3/4″ 1/2″ 31SLF-1.75-50 35SF-1.75-50 48SF-1.75-50      
1-7/8″ 3/8″ 31SLF-1.87-37 35SF-1.87-37 48SF-1.87-37      
1-7/8″ 1/2″ 31SLF-1.87-50 35SF-1.87-50 48SF-1.87-50      
2″ 1/2″ 31SLF-2.00-50 35SLF-2.00-50 48SF-2.00-50 61SF-2.00-50 71SF-2.00-50  
2-1/8″ 5/8″ 31SLF-2.12-62 35SLF-2.12-62 48SF-2.12-62 61SF-2.12-62 71SF-2.12-62  
2-1/4″ 1/2″ 31SLF-2.25-50 35SLF-2.25-50 48SF-2.25-50 61SF-2.25-50 71SF-2.25-50  
2-1/4″ 5/8″ 31SLF-2.25-62 35SLF-2.25-62 48SF-2.25-62 61SF-2.25-62 71SF-2.25-62  
2-3/8″ 5/8″ 31SLF-2.37-62 35SLF-2.37-62 48SF-2.37-62 61SF-2.37-62 71SF-2.37-62  
2-7/16″ 5/8″   35SLF-2.43-62 48SLF-2.43-62 61SF-2.43-62 71SF-2.43-62 81SF-2.43-62
2-1/2″ 5/8″   35SLF-2.50-62 48SLF-2.50-62 61SF-2.50-62 71SF-2.50-62 81SF-2.50-62
2-3/4″ 5/8″   35SLF-2.75-62 48SLF-2.75-62 61SF-2.75-62 71SF-2.75-62 81SF-2.75-62
2-15/16″ 3/4″     48SLF-2.93-75 61SF-2.93-75 71SF-2.93-75 81SF-2.93-75
3″ 3/4″     48SLF-3.00-75 61SLF-3.00-75 71SF-3.00-75 81SF-3.00-75
3-1/2″ 7/8″     48SLF-3.50-87 61SLF-3.50-87 71SF-3.50-87 81SF-3.50-87
3-15/16″ 1″       61SLF-3.93-1 71SF-3.93-1 81SF-3.93-1
4″ 1″       61SLF-4.00-1 71SF-4.00-1 81SF-4.00-1