Thrust ball bearing:51205

Description

Basic Parameters

The 51205 thrust ball bearing is a single-directional axial bearing with a separable design (solid rings + stamped steel cage), featuring a 25mm bore, 47mm OD, and 15mm width. Constructed from GCr15 bearing steel for hardness and wear resistance, it offers ISO IT4 precision (ABEC-5 equivalent), a 23.8 kN dynamic axial load rating, and 40.5 kN static axial load rating—optimized for pure axial loads (minimal radial capacity). It runs at up to 3,000 RPM (grease) or 5,000 RPM (oil), works in -30°C to +120°C, and is compatible with lithium-based/synthetic lubricants, with optional corrosion protection for harsh environments.

Features and Performance

High Axial Load Capacity

Optimized ball geometry and raceway design provide exceptional axial load-carrying capability, ideal for applications with pure or dominant axial forces.

Single-directional structure ensures unidirectional load support with minimal friction and energy loss.

Low Friction & High Efficiency

The stamped steel cage reduces ball-to-ball contact and friction, enabling smooth rotation and lower heat generation during high-speed operation.

Precision-ground raceways and balls minimize vibration, enhancing system efficiency and reducing power consumption.

Rigid Construction & Durability

Heat-treated bearing steel components offer high resistance to wear, fatigue, and impact, extending service life in harsh industrial environments.

Corrosion-resistant surface treatment (optional) protects against moisture and chemical exposure, suitable for humid or contaminated settings.

Easy Installation & Maintenance

Separable design allows independent mounting of the inner and outer rings, simplifying alignment and assembly in limited-space applications.

Standardized dimensions comply with ISO 199:1990, ensuring interchangeability with global bearing systems.

Materials and Construction

Bearing Steel Material: Main components of the bearing, such as washers and balls, are typically made from bearing steel 52100 (Gcr15), which offers good wear resistance and fatigue resistance.

Cage Material: The cage is usually made from copper or steel, used to secure and support the rolling elements within the bearing.

Groove Design: There are grooves on the washers that guide the movement of the rolling elements.

Product Application

The 51205 bearing, known for its unidirectional thrust capacity and ease of maintenance, is widely used in various mechanical equipment, such as:

Food processing equipment: Including biscuit machines, etc.

Industrial equipment: Such as spiral plate heat exchangers, bulldozers, centrifugal pumps, etc.

Other mechanical equipment: Including torsion testing machines, extrusion equipment, grinders, drying equipment, laminating machines, tablet presses, last making machines, machine tool grooves, tooling fixtures, showering devices, friction welding machines, coking equipment, gear shapers, air purifiers, etc.

In summary, the 51205 bearing is a stable and easy-to-maintain unidirectional thrust ball bearing suitable for various mechanical equipment that requires unidirectional thrust capacity.

Product List

Bearing No.		Dimensions (mm)			Basic Load Rating (N)		Weight
ISO	GOST	d	D	B	Dyn. C	Stat. C0	（kg）
51200	8200	10	26	11	12700	17000	0.031
51201	8201	12	28	11	13300	19000	0.034
51202	8202	15	32	12	16500	25000	0.046
51203	8203	17	35	12	17200	27500	0.053
51204	8204	20	40	14	22500	37500	0.083
51205	8205	25	47	15	25500	47500	0.11
51206	8206	30	52	16	26700	50000	0.13
51207	8207	35	62	18	35100	67000	0.22
51208	8208	40	68	19	46800	98000	0.28
51209	8209	45	73	20	39000	80000	0.3
51210	8210	50	78	22	49400	106000	0.37
51211	8211	55	90	25	61800	134000	0.59
51212	8212	60	95	26	62400	140000	0.65
51213	8213	65	100	27	63700	150000	0.78
51214	8214	70	105	27	65000	160000	0.79
51215	8215	75	110	27	67600	170000	0.83
51216	8216	80	115	28	76100	190000	0.91
51217	8217	85	125	31	97500	250000	1.2
51218	8218	90	135	35	119000	300000	1.7
51220	8220	100	150	38	124000	320000	2.2
51222	8222	110	160	38	130000	360000	2.4
51224	8224	120	170	39	140000	400000	2.65
51226	8226	130	190	45	186000	540000	4
51228	8228	140	200	46	190000	570000	4.35
51230	8230	150	215	50	238000	735000	6.1
51232	8232	160	225	51	242000	780000	6.55
51234	8234	170	240	55	286000	930000	8.15
51236	8236	180	250	56	296000	1000000	8.6
51238	8238	190	270	62	332000	1160000	11.7
51240	8240	200	280	62	338000	1220000	12
51244	8244	220	300	63	351000	1320000	13
51248	8248	240	300	45	462000	1980000	23
51252	8252	260	360	79	470000	2100000	25.2
51256	8256	280	380	80	492000	2320000	26.5
51260	8260	300	420	95	605000	2870000	42
51264	8264	320	440	95	611000	2900000	45.32
51268	8268	340	460	96	612400	3200000	48.5
51272	8272	360	500	110	741000	4150000	70