Pillow Block Bearings

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Pillow block bearings, sometimes referred to as plummer block bearings, are mounted bearings that are used to provide load support for a rotating shaft. Their mounting surface is on a plane parallel and offset to the axis of the shaft. Mounting holes or slots in the base or feet of pillow block bearings permit adjustment and easy mounting.

Pillow block bearings are constructed of a housing and a bearing. Many pillow blocks have a replaceable bearing, referred to as an insert bearing. Bearings used with pillow block housings usually are self- aligning to compensate for angular misalignments.

Adjustment of a misaligned shaft can occur in any direction and allows centering and alignment without distorting seals. Pillow block bearing units include a hollow set screw for easy and firm attachment on a shaft and a one-piece housing for structural strength.

Bearing Number	Bore Dia	Outer DIa	Width	Size
2.756 Inch \| 70 Millimeter x 4.74 Inch \| 120.396 Millimeter x 3.5 Inch \| 88.9 Millimeter QM INDUSTRIES QAAPX15A070SO Pillow Block Bearings	27 mm	7.5 mm	-40 °C	95 mm
3.75 Inch \| 95.25 Millimeter x 5.13 Inch \| 130.302 Millimeter x 4.25 Inch \| 107.95 Millimeter QM INDUSTRIES QVVPL22V312ST Pillow Block Bearings	54 mm	M6x1	51.8 kN	P312-
2.688 Inch \| 68.275 Millimeter x 4.74 Inch \| 120.396 Millimeter x 3.5 Inch \| 88.9 Millimeter QM INDUSTRIES QAAPX15A211SO Pillow Block Bearings	P5	Grade 5	A	No
2.5 Inch \| 63.5 Millimeter x 4.3 Inch \| 109.22 Millimeter x 3 Inch \| 76.2 Millimeter QM INDUSTRIES QAAPX13A208SO Pillow Block Bearings	28	Clear Anodize	Single	[Aluminum Alloy] Alu
3.688 Inch \| 93.675 Millimeter x 5.13 Inch \| 130.302 Millimeter x 4.25 Inch \| 107.95 Millimeter QM INDUSTRIES QVVPL22V311SM Pillow Block Bearings	9,500 rpm	4.73 Hz	40 mm	81 mm
3.75 Inch \| 95.25 Millimeter x 4.13 Inch \| 104.902 Millimeter x 4.94 Inch \| 125.476 Millimeter QM INDUSTRIES QVPA22V312SC Pillow Block Bearings	31 mm	100 °C	61 mm	12 mm
3.438 Inch \| 87.325 Millimeter x 5.18 Inch \| 131.572 Millimeter x 3.75 Inch \| 95.25 Millimeter QM INDUSTRIES QAAPR18A307SEO Pillow Block Bearings	13.83 Hz	12.18 Hz	16	NTN
3 Inch \| 76.2 Millimeter x 4.74 Inch \| 120.396 Millimeter x 3.125 Inch \| 79.38 Millimeter QM INDUSTRIES QAAPR15A300SEO Pillow Block Bearings	21 mm	30.16 mm	M6x1	0.95 kg
3.543 Inch \| 90 Millimeter x 5.18 Inch \| 131.572 Millimeter x 3.74 Inch \| 95 Millimeter QM INDUSTRIES QAAPR18A090SO Pillow Block Bearings	Radial	Standard	No	No
2.438 Inch \| 61.925 Millimeter x 4.3 Inch \| 109.22 Millimeter x 2.75 Inch \| 69.85 Millimeter QM INDUSTRIES QAAPR13A207SEO Pillow Block Bearings	7 Days	Double	Flange Type	Bearings with Housin
2.688 Inch \| 68.275 Millimeter x 3.33 Inch \| 84.582 Millimeter x 3.75 Inch \| 95.25 Millimeter QM INDUSTRIES QVPN17V211SN Pillow Block Bearings	1045 Carbon Steel	102	6205	6
3.5 Inch \| 88.9 Millimeter x 5.18 Inch \| 131.572 Millimeter x 3.75 Inch \| 95.25 Millimeter QM INDUSTRIES QAAPR18A308SO Pillow Block Bearings	Bearing Steel	Silicone	Cylindrical Bore Set	Take-Up Type