Fits of radial spherical plain bearings
Shaft fits
Operating conditions Sliding contact surface combination requiring maintenance maintenance-free Loads of all kinds，clearance or transition fit h6,hardened shaft h6,g6 Loads of all kinds，interference fit m6 k6
Housing fits
Operating conditions Sliding contact surface combination requiring maintenance maintenance-free Light loads
Axial displacement required
H7
H7
|
Heavy loads |
M7 |
K7 |
|
Light alloy housings |
N7 |
M7 |
Shaft diameter tolerances
Shaft diameter mm Shaft diameter tolerances um g6 h6 k6 m6 over incl. high low high low high low high low 3 6 -4 -12 0 -8 9 1 12 4 6 10 -5 -14 0 -9 10 1 15 6 10 18 -6 -17 0 -11 12 1 18 7 18 30 -7 -20 0 -13 15 2 21 8 30 50 -9 -25 0 -16 18 2 25 9 50 80 -10 -29 0 -19 21 2 30 11 80 120 -12 -34 0 -22 25 3 35 13 120 180 -14 -39 0 -25 28 3 40 15 180 250 -15 -44 0 -29 33 4 46 17 250 315 -17 -49 0 -32 36 4 52 20 315 400 -18 -54 0 -36 40 4 57 21 400 500 -20 -60 0 -40 45 5 63 23 500 630 -22 -66 0 -44 44 0 70 26 630 800 -24 -74 0 -50 50 0 80 30
Housing bore tolerances
Housing bore diameter mm Housing bore tolerances um H7 K7 M7 N7 over incl. low high low high low high low high 10 18 0 18 -12 6 -18 0 -23 -5 18 30 0 21 -15 6 -21 0 -28 -7 30 50 0 25 -18 7 -25 0 -33 -8 50 80 0 30 -21 9 -30 0 -39 -9 80 120 0 35 -25 10 -35 0 -45 -10 120 150 0 40 -28 12 -40 0 -52 -12 150 180 0 40 -28 12 -40 0 -52 -12 180 250 0 46 -33 13 -46 0 -60 -14 250 315 0 52 -36 16 -52 0 -66 -14 315 400 0 57 -40 17 -57 0 -73 -16 400 500 0 63 -45 18 -63 0 -80 -17 500 630 0 70 -70 0 -96 -26 -114 -44 630 800 0 80 -80 0 -110 -30 -130 -50 800 1000 0 90 -90 0 -124 -34 -146 -56 1000 1250 0 105 -105 0 -145 -40 -171 -66
