Part Number	d - Bore	D - Outer Diameter	B - Width	Cr - Dynamic Radial Rating	Cor - Static Radial Rating	Reference speed	Limiting speed
NK37/20R	37mm mm	47mm mm	20mm mm	-	-	-	-
NK37/20R+IR32×37×20	32mm mm	47mm mm	20mm mm	-	-	-	-
NK37/30R	37mm mm	47mm mm	30mm mm	-	-	-	-
NK37/30R+IR32×37×30	32mm mm	47mm mm	30mm mm	-	-	-	-
NK38/20R	38mm mm	48mm mm	20mm mm	-	-	-	-
NK38/30R	38mm mm	48mm mm	30mm mm	-	-	-	-
NK40/20R+IR35×40×20	35mm mm	50mm mm	20mm mm	-	-	-	-
NK40/30R	40mm mm	50mm mm	30mm mm	-	-	-	-
NK40/30R+IR35×40×30	35mm mm	50mm mm	30mm mm	-	-	-	-
NK42/20R	42mm mm	52mm mm	20mm mm	-	-	-	-
NK42/30R	42mm mm	52mm mm	30mm mm	-	-	-	-
NK43/20R	43mm mm	53mm mm	20mm mm	-	-	-	-
NK43/20R+IR38×43×20	38mm mm	53mm mm	20mm mm	-	-	-	-
NK43/30R	43mm mm	53mm mm	30mm mm	-	-	-	-
NK43/30R+IR38×43×30	38mm mm	53mm mm	30mm mm	-	-	-	-
NK45/20R	45mm mm	55mm mm	20mm mm	-	-	-	-
HK2216	22mm mm	28mm mm	16mm mm	-	-	-	-
HK2016	20mm mm	26mm mm	16mm mm	-	-	-	-
HK2512	25mm mm	32mm mm	12mm mm	-	-	-	-
HK2212	22mm mm	28mm mm	12mm mm	-	-	-	-