NSK Tapered roller bearing

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Product Introduction

NSK Tapered roller bearing It is a separable bearing, consisting of an inner ring component and an outer ring. The conical apex of the roller, inner ring raceway, and outer ring raceway meet at a point on the bearing axis. It can withstand large radial loads and unidirectional axial composite loads at the same time. When used in a single row, it generally needs to be installed in pairs back to back or face to face to offset the axial component force generated by operation and achieve bidirectional axial limit. The internal clearance can be accurately adjusted or preloaded during the assembly stage to improve the rigidity of the shaft system.

The product line is divided into single row metric HR high load series, standard metric series, inch non-standard series, double row and four row heavy load tapered roller bearings. According to the contact angle, it is divided into ordinary cone angle, medium cone angle-C and large cone angle-D; the larger the contact angle, the stronger the axial load-bearing capacity. The HR high-load enhanced version has the same outer dimensions, increases the roller diameter and number of rollers, significantly increases the rated load, and has a longer service life. It can directly replace the ordinary standard model and upgrade the load-bearing performance of the equipment.

The rollers adopt NSK precision crown modification process to reduce edge stress concentration and resist impact loads; the cages are mainly made of high-strength steel plate stamping cages, and large-size and heavy-duty models are equipped with pin-type cages, which have excellent stability. The bearing steel is made of high-purity clean steel with mature heat treatment technology. The raceway has been super-finished and is wear-resistant and fatigue-resistant. It is suitable for long-term continuous operation under heavy load, vibration and impact conditions.

The accuracy specifications are complete, and the clearance can be freely adjusted by installing gaskets; double-row and four-row models are mostly used in heavy-duty rolling mills, mining equipment and other over-large load conditions, and can withstand bidirectional compound loads without being assembled in pairs.

Complete model examples: HR32208J, 30210, 30312, 31310D.

Typical application scenarios: heavy-duty transmission parts such as automobile wheels, differentials, gearboxes, reducers, mining engineering machinery, cement equipment, papermaking machinery, metallurgical rolling mills, and lifting equipment.

Product Parameters

Bearing categories	Product sub-series	Series features	Commonly used representative models
Single row-HR high load metric series reinforced version, higher rated load, ISO standard interchangeable	HR302 series (light ordinary cone angle)	The main force in market circulation, radial load priority, universal model for reducers and automobile wheels, ‑J stands for international interchange of inner and outer rings	HR30208J, HR30210J, HR30212J, HR30215J
	HR322 series (medium widened)	The rollers are lengthened, and the load-bearing capacity is better than that of the 302 series. It is used in engineering machinery and differentials.	HR32208J, HR32210J, HR32212J, HR32215J
	HR303 series (heavy load)	Enlarged outer diameter, strong radial load-bearing capacity, suitable for mining and heavy-duty gearboxes	HR30308J, HR30310J, HR30312J, HR30315J
	HR323 series (widened and heavy-duty)	The longest single-row roller in the entire series, outstanding impact resistance, suitable for heavy-duty working conditions	HR32308J, HR32310J, HR32312J
Single row - medium cone angle and large cone angle enhanced axial load carrying capacity	313‑C Medium Taper Angle Series	The contact angle is about 20°, the axial thrust is stronger, and it is specially used for automobile differential pinion shaft NSK China	31310C, 31312C, 31315C
	313‑D Large Cone Angle Series	The contact angle is about 28°, mainly designed to withstand large axial loads.	31310D, 31312D, 31315D
Thin-walled single-row tapered rollers have compact radial installation space	320 (X) Series	Thin cross-section, suitable for passenger wheel hubs and light transmission parts with limited space	32008XJ, 32010XJ, 32012XJ
Double row tapered roller bearings can withstand bidirectional compound loads and do not need to be installed in pairs	352000, 352200 series	Two rows of rollers are integrated back to back and have high rigidity. They are used in large reducers and rolling mills.	352020, 352224
Four-row heavy-duty tapered roller bearings are specially designed for heavy-duty metallurgical equipment with extremely large loads.	380000 series	Four rows of roller structure, can withstand extremely high radial and axial impact loads, suitable for hot rolling mills and large mining equipment	381030, 382936
Inch non-standard tapered roller bearings imported spare parts for automobiles and engineering machinery	LM, L, M series	Inch size, inner and outer rings are numbered separately, mostly used for imported axle replacement spare parts	LM12749/LM12711, L68149/L68111

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OUR WAREHOUSE

We specialize in providing forklift bearings, deep groove ball bearings, self-aligning ball bearings, self-aligning roller bearings, cylindrical roller bearings, tapered roller bearings, wheel hub bearings, agricultural machinery bearings, etc.