Note: This table is to be used as a guide for machining housings using the “ER” style “A” Extended Inner Ring Bearing.
3/4 ER-12T 1.8504 1 9/32 13/32 7/8 31/64 1 3/16 11/64 3/64 3/32 1 3/4 5/8 1 5/8 .040 .094 2 1/16 3/8 .56
52MM
1 ER-16T 2.0472 1 7/16 33/64 59/64 39/64 1 3/8 13/64 3/64 3/32 1 15/16 3/4 1 55/64 .040 .135 2 17/64 3/8 .68
1 1/8 ER-18T 62MM
1 3/16 ER-19T 2.4409 1 9/16 5/8 15/16 11/16 1 19/32 7/32 1/16 1/8 2 3/16 7/8 2 5/32 .040 .187 2 21/32 3/8 .93
1 1/4 ER-20T 2 7/16
1 3/8 ER-22T 72MM 1 3/4 11/16 1 1/16 3/4 1 55/64 7/32 1/16 1/8 15/16 2 9/16 .040 .219 3 5/64 7/16 1.37
1 7/16 ER-23T 2.8346 2 9/16
80MM
1 1/2 ER-24T 3.1496 2 3/4 1 1/4 29/32 2 1/16 1/4 1/16 1/8 2 11/16 1 3/32 2 53/64 .062 .203 3 13/32 7/16 2.00
1 11/16 ER-27T 85MM
1 3/4 ER-28T 3.3465 2 3/4 1 1/4 29/32 2 19/64 1/4 1/16 1/8 2 15/16 1 3/32 3 1/16 .062 .203 3 19/32 7/16 2.31
90MM
1 15/16 ER-31T 3.5433 2 3/32 3/4 1 11/32 29/32 2 15/32 19/64 3/32 1/8 3 3/8 1 1/8 3 7/32 .062 .188 3 25/32 9/16 2.43
2 ER-32T 100MM 3 1/2
2 3/16 ER-35T 3.9370 2 1/4 7/8 1 3/8 31/32 2 23/32 19/64 3/32 1/8 3 5/8 1 3/16 3 9/16 .080 .281 4 3/16 9/16 3.00
110MM
2 7/16 ER-39T 4.3307 2 5/8 1 1 5/8 1 1/32 2 63/64 19/64 3/32 1/8 4 1/8 1 1/4 3 15/16 .080 .375 4 37/64 11/16 4.00
Series Style “A” “ER” Mounting Fits Table
See load ratings, see page 77.
For standard duty SKWEZLOC Bearing Inserts, see page 76.
* To install an ER Type bearing into a housing, push ONLY on outer ring to avoid damaging balls and races.
ER HOUSING DIMENSION RECOMMENDATIONS
(INCHES)
SHAFT
SIZES
OUTSIDE DIA. OF CARTRIDGE STATIONARY HOUSING REVOLVING HOUSING
DIAMETERS DIAMETERS THEORETICAL FIT DIAMETERS THEORETICAL FIT
MAX. MIN. MAX. MIN. TIGHT LOOSE MAX. MIN. TIGHT LOOSE
1/2 - 3/4 1.8506 1.8498 1.8508 1.8505 .0001 .0010 1.8503 1.8500 .0006 .0005
7/8 - 1 2.0474 2.0464 2.0474 2.0473 .0001 .0010 2.0469 2.0468 .0006 .0005
1 1/16 - 1 3/16 2.4413 2.4403 2.4413 2.4412 .0001 .0010 2.4408 2.4407 .0006 .0005
1 1/4 - 1 7/16 2.8348 2.8338 2.8348 2.8347 .0001 .0010 2.8343 2.8342 .0006 .0005
1 1/2 - 1 9/16 3.1498 3.1488 3.1498 3.1497 .0001 .0010 3.1493 3.1492 .0006 .0005
1 5/8 - 1 3/4 3.3466 3.3469 3.3469 3.3465 .0001 .0013 3.3463 3.3459 .0007 .0007
1 7/8 - 1 15/16 3.5434 3.5424 3.5437 3.5433 .0001 .0013 3.5431 3.5427 .0007 .0007
2 - 2 3/16 3.9371 3.9361 3.9374 3.9370 .0001 .0013 3.9368 3.9364 .0007 .0007
2 1/4 - 2 3/16 4.3308 4.3298 4.3311 4.3307 .0001 .0013 4.3305 4.3301 .0007 .0007
2 1/2 - 2 11/16 4.9214 4.9204 4.9220 4.9212 .0002 .0016 4.9213 4.9205 .0009 .0009
2 7/8 - 2 15/16 5.1181 5.1171 5.1187 5.1179 .0002 .0016 5.1180 5.1172 .0009 .0009
3 - 3 3/16 5.5119 5.5107 5.5123 5.5117 .0002 .0016 5.5116 5.5110 .0009 .0009
3 1/4 - 3 7/16 5.9056 5.9044 5.9060 5.9054 .0002 .0016 5.9053 5.9047 .0009 .0009
3 11/16 - 4 7.4806 7.4788 7.4812 7.4804 .0002 .0024 7.4802 7.4794 .0012 .0014