16000 Series Bearings

The series in this sub-library are mostly rungs on one ladder: fix the shaft, and each step up gives a larger outside diameter to fit a larger load. The 16000 series is not a rung. At every bore it shares its outside diameter exactly with the 6000 series — a 16000 is 26 mm across like a 6000, a 16020 is 150 mm like a 6020 — and takes the difference out of the width instead: 7 mm against 8 at a 10 mm bore, 16 mm against 24 at a 100 mm bore. That is what it is for. When the housing bore is already fixed by the machine and what you have run out of is room along the shaft, a 16000 goes into the seat a 6000 would have taken, 1 to 8 mm thinner.

A narrower ring is not a free saving. Less width means less raceway and less room for the ball set, so a 16000 does not carry what the 6000 of the same bore carries — the same trade of section for capacity that every other pair of series here makes. So the 16000 is chosen on width, not on capacity: if the space is there, the 6000 is the better bearing; if it is not, the 16000 is often the only standard part that fits at all.

The 16000 series is also the one series here whose number does not split the way the others do. 16004 is written 160 followed by the bore code 04 — type 6, series 16, bore 04 is not how it breaks down. Everything else about reading it is unchanged: 04 is a 20 mm bore, 00 to 03 are the 10, 12, 15 and 17 mm special cases, and from 04 upwards the code is multiplied by five. Catalogues name the family the 160 series.

The series runs from 16000 (10 mm bore, 26 mm outside diameter, 7 mm wide) to 16020 (100 mm bore, 150 mm outside diameter, 16 mm wide) — 21 designations, one for every bore code from 00 to 20. Every designation in the table below links to its own page with the ISO 15 dimensions, the bore-code arithmetic, the ISO 5753-1 clearance ranges for its bore, and the same-bore comparison against every other series.

d = bore, D = outside diameter, B = width, r s min = minimum single chamfer dimension. All four are ISO 15 standard values and are the same for every manufacturer. The last column is derived: radial section = (D − d) / 2, the wall thickness you are working with when you size the housing. No load rating and no limiting speed appears here — see the bearings index for why.

Outside diameter × width in millimetres, for the five smallest bores in this batch. The full chart across all 21 bores and all 7 series is on the bearings index. Reading a row is what a machine designer does when the shaft is already fixed: the bore does not change, the housing bore does.