Koyo / JTEKT bearings for gearboxes, drive shafts and general machinery
Selection Notes · Machinery Company
Practical guidance on matching old Koyo marks to current JTEKT references, building shaft-position bearing lists, selecting needle roller bearings for tight radial space, and preparing customs documents for gearbox, drive shaft and machinery bearings.
Latest note
Featured · Product & Series Guides· 6
Verify Koyo 6309-2RS specs to prevent premature seal failure and costly downtime in harsh mining environments. This guide details 45x100x25mm dimensions, load ratings, and…
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Featured · Product & Series Guides· 7
Master Koyo 6202ZZ specs beyond basic 15x35x11mm dimensions to prevent motor overheating and premature failure. Select correct C0 or C3 clearance and match grease…
Read the full note Featured · Product & Series Guides· 7
Master Koyo SN512 specs to prevent premature failure in heavy-duty mining and industrial applications. Learn how matching internal bearing clearance and seal types to…
Read the full note Featured · Product & Series Guides· 8
Stop relying solely on basic Koyo UCP208 specs like 40mm bore and 80mm outer diameter for harsh industrial sourcing. Verify internal clearance codes and…
Read the full note Featured · Product & Series Guides· 7
Master Koyo UC207 specs beyond basic dimensions to prevent premature bearing failures caused by mismatched seals. Learn how selecting the right seal type for…
Read the full note
Featured · Product & Series Guides· 8
Master Koyo 51107 specs to prevent costly radial-load failures in industrial machinery. This guide details the 35x52x12mm dimensions, axial load capacity, and 3900 RPM…
Read the full note
Featured · Product & Series Guides· 8
Selecting the right Koyo 1206 specs requires matching internal clearance and load ratings to actual site conditions, not just dimensions. Learn how thermal expansion…
Read the full note Featured · Product & Series Guides· 8
Master Koyo 7207B specs to prevent high-speed spindle failures caused by axial preload errors. Learn why the 40-degree contact angle demands strict DB pairing…
Read the full note Featured · Product & Series Guides· 7
Master KOYO NJ308 specs including 40 mm bore, 90 mm OD, and verified load ratings for reliable machinery performance. Ensure authentic sourcing through batch…
Read the full note Featured · Product & Series Guides· 7
Master Koyo NU212 specs by matching 60x110x22mm dimensions with correct C3 clearance for high-speed applications. Avoid thermal locking and premature failure through precise internal…
Read the full noteCross-references, shaft-position lists, per-unit quantities and shipping documents for Koyo and JTEKT bearings.
01 · Product & Series Guides
Verify Koyo 6309-2RS specs to prevent premature seal failure and costly downtime in harsh mining environments. This guide details 45x100x25mm dimensions, load ratings, and…
Read this note 02 · Product & Series Guides
Master Koyo 6202ZZ specs beyond basic 15x35x11mm dimensions to prevent motor overheating and premature failure. Select correct C0 or C3 clearance and match grease…
Read this note 03 · Product & Series Guides
Master Koyo SN512 specs to prevent premature failure in heavy-duty mining and industrial applications. Learn how matching internal bearing clearance and seal types to…
Read this note 04 · Product & Series Guides
Stop relying solely on basic Koyo UCP208 specs like 40mm bore and 80mm outer diameter for harsh industrial sourcing. Verify internal clearance codes and…
Read this note 05 · Product & Series Guides
Master Koyo UC207 specs beyond basic dimensions to prevent premature bearing failures caused by mismatched seals. Learn how selecting the right seal type for…
Read this note 06 · Product & Series Guides
Master Koyo 51107 specs to prevent costly radial-load failures in industrial machinery. This guide details the 35x52x12mm dimensions, axial load capacity, and 3900 RPM…
Read this note 07 · Product & Series Guides
Selecting the right Koyo 1206 specs requires matching internal clearance and load ratings to actual site conditions, not just dimensions. Learn how thermal expansion…
Read this note 08 · Product & Series Guides
Master Koyo 7207B specs to prevent high-speed spindle failures caused by axial preload errors. Learn why the 40-degree contact angle demands strict DB pairing…
Read this note 09 · Product & Series Guides
Master KOYO NJ308 specs including 40 mm bore, 90 mm OD, and verified load ratings for reliable machinery performance. Ensure authentic sourcing through batch…
Read this note 10 · Product & Series Guides
Master Koyo NU212 specs by matching 60x110x22mm dimensions with correct C3 clearance for high-speed applications. Avoid thermal locking and premature failure through precise internal…
Read this note