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Bearing Steel Tube (52100): Drilled and Bored from Bar on the Lathe
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18. uMfumfu 2026NO
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Bearing Steel Tube (52100): Drilled and Bored from Bar on the Lathe

Bearing races are turned from 52100 tube. Factory tube is made seamless; in a workshop it can be drilled and bored from annealed 52100 bar on the lathe, which is our method here. Cut it soft: it is hardened only after the races are turned. The picture: our drawing, bar to tube.
Ophakathi
Half a day

Imiyalelo

1

Cut the blank

Saw a length of annealed bar a little longer than the tube you need.

Izinto zokwakha zalesi sinyathelo:

Induku yensimbi ye-bearing (52100)Induku yensimbi ye-bearing (52100)1 ucezu

Amathuluzi adingekayo:

Isaha SensimbiIsaha Sensimbi
Isibambo SebhentshiIsibambo Sebhentshi
2

Face and centre

Grip it in the three-jaw chuck, face the end square and centre-drill it.

Amathuluzi adingekayo:

Umshini Wokuphendula InsimbiUmshini Wokuphendula Insimbi
Isibambi somshini wokuphenda esinemilomo emithathuIsibambi somshini wokuphenda esinemilomo emithathu
Ithuluzi lokusika le-latheIthuluzi lokusika le-lathe
Isethi yamabhitha okuqala imboboIsethi yamabhitha okuqala imbobo
Uwoyela wokusikaUwoyela wokusika
Izibuko zokuphephaIzibuko zokuphepha
3

Drill through

Drill through from the tailstock, starting small and opening up a few sizes at a time, with cutting oil. Back out often to clear the chips.

Amathuluzi adingekayo:

Umshini Wokuphendula InsimbiUmshini Wokuphendula Insimbi
Iqoqo Lamakhanda EbholaIqoqo Lamakhanda Ebhola
Uwoyela wokusikaUwoyela wokusika
Izibuko zokuphephaIzibuko zokuphepha
4

Bore the inside

Bore the hole out to the inside diameter with light cuts, checking with the caliper.

Amathuluzi adingekayo:

Umshini Wokuphendula InsimbiUmshini Wokuphendula Insimbi
Induku yokusika ngaphakathiInduku yokusika ngaphakathi
Uwoyela wokusikaUwoyela wokusika
I-Caliper Yedijithali Yamayintshi Ayi-6I-Caliper Yedijithali Yamayintshi Ayi-6
Izibuko zokuphephaIzibuko zokuphepha
5

Turn the outside

Turn the outside to diameter, keeping the wall even all round.

Amathuluzi adingekayo:

Umshini Wokuphendula InsimbiUmshini Wokuphendula Insimbi
Ithuluzi lokusika le-latheIthuluzi lokusika le-lathe
Uwoyela wokusikaUwoyela wokusika
I-Caliper Yedijithali Yamayintshi Ayi-6I-Caliper Yedijithali Yamayintshi Ayi-6
Izibuko zokuphephaIzibuko zokuphepha
6

Face to length

Part or face the tube to length and file off the burrs.

Amathuluzi adingekayo:

Umshini Wokuphendula InsimbiUmshini Wokuphendula Insimbi
Insimbi yokuhlukanisa emshinini wokuphothaInsimbi yokuhlukanisa emshinini wokuphotha
Iqoqo LamafayelaIqoqo Lamafayela
I-Caliper Yedijithali Yamayintshi Ayi-6I-Caliper Yedijithali Yamayintshi Ayi-6

Izinto

1

Amathuluzi Adingekayo

13

Le blueprint yenza

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Isibambeli

Ishubhu yensimbi ye-bearing (52100)

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Lama-blueprint abelana ngolwazi — amasu, izinto noma izimiso

Bearing Steel Bar (52100): Crucible Steel Alloyed with Chromium

Bearing Steel Bar (52100): Crucible Steel Alloyed with Chromium

ngu-ForgeNO

Umsebenzi Wensimbi

15
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Facing and Turning to a Diameter: Taking a Cut You Can Predict

Facing and Turning to a Diameter: Taking a Cut You Can Predict

ngu-ForgeNO

Umsebenzi Wensimbi

39
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Workholding on the Lathe: Three Jaws, Four Jaws, and Which to Reach For

Workholding on the Lathe: Three Jaws, Four Jaws, and Which to Reach For

ngu-MartinNO

Umsebenzi Wensimbi

46
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