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Pillow Block Bearing: a Grey-Iron Housing Bored for a Ball Bearing
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19. uMfumfu 2026NO
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Pillow Block Bearing: a Grey-Iron Housing Bored for a Ball Bearing

A pillow block holds a shaft in a bearing parallel to the surface it is bolted to. Heavy housings are commonly grey cast iron, the bearing is usually 52100 steel, and the shaft is held with set screws or collars (Wikipedia, Pillow block bearing). This one is a housing cast in grey iron, bored on the lathe and fitted with a ball bearing, for an 8 mm shaft. Design and sizes are ours. The picture: our drawing.
Osezingeni eliphezulu
2 days

Imiyalelo

1

Make the pattern

From pine, make a pattern: a flat base 90 × 25 mm with a lug at each end, and a round boss rising from its middle about 40 mm across, its axis parallel to the base. Allow a little extra on the boss for boring, and taper all sides so it draws.

Amathuluzi adingekayo:

Ipulangwe lomphayiniIpulangwe lomphayini
Isaha Se-CopingIsaha Se-Coping
Isethi yezisebenzi zokhuniIsethi yezisebenzi zokhuni
I-Caliper Yedijithali Yamayintshi Ayi-6I-Caliper Yedijithali Yamayintshi Ayi-6
2

Melt the iron

Melting pig iron in the cupola and tapping it into the ladle.
3

Mould and pour

Ram the pattern up in the flask, draw it, cut a sprue and runner, and pour grey iron from the ladle. Let it cool in the sand, then shake it out and grind off the sprue and fins.

Izinto zokwakha zalesi sinyathelo:

Izingqumba zensimbi eluhlazaIzingqumba zensimbi eluhlaza1.5 kg

Amathuluzi adingekayo:

Isihlabathi sokubumbaIsihlabathi sokubumba
Ibhokisi lokubumbaIbhokisi lokubumba
Ifosholo LesandlaIfosholo Lesandla
Ikhezo lokuthela insimbi encibilikileIkhezo lokuthela insimbi encibilikile
I-angle grinderI-angle grinder
Amagilavu okushiselaAmagilavu okushisela
Ipheshana LesikhumbaIpheshana Lesikhumba
Isivikelo SobusoIsivikelo Sobuso
4

Face the base and bore

File or grind the base flat. Bolt the housing to the lathe faceplate with the boss's axis on the lathe centre and the base parallel to it, and bore the boss to a light press fit for the ball bearing's outer race.

Amathuluzi adingekayo:

Umshini Wokuphendula InsimbiUmshini Wokuphendula Insimbi
I-faceplate ye-latheI-faceplate ye-lathe
Induku yokusika ngaphakathiInduku yokusika ngaphakathi
I-Caliper Yedijithali Yamayintshi Ayi-6I-Caliper Yedijithali Yamayintshi Ayi-6
Iqoqo LamafayelaIqoqo Lamafayela
Izibuko zokuphephaIzibuko zokuphepha
5

Slot the lugs

Drill and file a slot in each lug for a mounting bolt, square to the base, so the block can be lined up before it is tightened.

Amathuluzi adingekayo:

Ibhola ElimileIbhola Elimile
Iqoqo Lamakhanda EbholaIqoqo Lamakhanda Ebhola
Iqoqo LamafayelaIqoqo Lamafayela
Isibambo SebhentshiIsibambo Sebhentshi
6

Press in the bearing

Press the ball bearing squarely into the bore, pushing on the outer race only. Check the inner race turns freely; the shaft is then held in it with set collars.

Izinto zokwakha zalesi sinyathelo:

I-Bearing YamabholaI-Bearing Yamabhola1 ucezu

Amathuluzi adingekayo:

Isibambo SebhentshiIsibambo Sebhentshi
Isando esinekhanda elimise okwesikhonkwaneIsando esinekhanda elimise okwesikhonkwane

Izinto

2

Amathuluzi Adingekayo

21

Le blueprint yenza

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I-bearing ye-pillow block (KP08)

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Casting Iron in a Cupola Furnace — Re-Melting Pig Iron into Finished Castings

Casting Iron in a Cupola Furnace — Re-Melting Pig Iron into Finished Castings

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Tuyere Iron: a Slotted Grate Cast in Grey Iron

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