Part Number	d - Bore	D - Outer Diameter	B - Width	Cr - Dynamic Radial Rating	Cor - Static Radial Rating	Reference speed	Limiting speed
NK28/20R	28mm mm	37mm mm	20mm mm	-	-	-	-
NK29/20R+IR25×29×20	25mm mm	38mm mm	20mm mm	-	-	-	-
NK28/30R	28mm mm	37mm mm	30mm mm	-	-	-	-
NK29/30R	29mm mm	38mm mm	30mm mm	-	-	-	-
NK29/20R	29mm mm	38mm mm	20mm mm	-	-	-	-
NA4913R	65mm mm	90mm mm	25mm mm	-	-	-	-
NA4911R	55mm mm	80mm mm	25mm mm	-	-	-	-
NA4914R	70mm mm	100mm mm	30mm mm	-	-	-	-
NA4912R	60mm mm	85mm mm	25mm mm	-	-	-	-
NA4915R	75mm mm	105mm mm	30mm mm	-	-	-	-
NA4913R	65mm mm	90mm mm	25mm mm	-	-	-	-
NA4916R	80mm mm	110mm mm	30mm mm	-	-	-	-
NA4914R	70mm mm	100mm mm	30mm mm	-	-	-	-
NA4917R	85mm mm	120mm mm	35mm mm	-	-	-	-
NA4915R	75mm mm	105mm mm	30mm mm	-	-	-	-
NA4918R	90mm mm	125mm mm	35mm mm	-	-	-	-
NA4916R	80mm mm	110mm mm	30mm mm	-	-	-	-
NA4919R	95mm mm	130mm mm	35mm mm	-	-	-	-
NA4917R	85mm mm	120mm mm	35mm mm	-	-	-	-
NA4920R	100mm mm	140mm mm	40mm mm	-	-	-	-