What are the typical applications for four point contact ball bearings with external gear?

These bearings are typically used in heavy-duty machinery such as construction equipment, mining machinery, and industrial presses where high load capacity and reliability are critical. The external gear is particularly useful for applications requiring efficient torque transmission.

How do I ensure the longevity of these bearings?

To maximize the lifespan of four point contact ball bearings with external gear, it's essential to maintain proper lubrication and to regularly inspect for signs of wear or damage. Avoiding overloading and ensuring that the machinery is well-maintained can also significantly extend the service life of these bearings.

Four Point Contact Ball Bearings (External Gear)

Robust and Reliable Mechanical Support

Our four point contact ball bearings with external gear are engineered to provide superior load distribution and durability in heavy-duty machinery. These bearings are designed for precision and reliability, ensuring smooth operation in various industrial applications such as construction equipment, heavy vehicles, and industrial machinery.

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KVSA20 Series 4-Point Contact Ball Slewing Bearing

Model	Outer Diameter D	Bore d	Outer Ring Inner Dia d1	Outer Locating Shoulder d1zt+IT8	Inner Ring Outer Dia D1	Inner Locating Shoulder dzt+IT8	Module	Teeth Number	Pitch Circle Diameter do	Axial Dynamic Load Ca	Axial Static Load Coa	Radial Dynamic Load Cr	Radial Static Load Cor	Outer Ring PCD1	Mount Hole	Inner Ring PCD2	Mount Hole	Axial Clearance	Radial Clearance
KVSA200414	503.3	342+0.5	415.5+0.5	417	412.5-0.5	344	5	99	495	169	560	111	248	455	20-M12 Deep 20	368	24-M14	0～0.08	0～0.05
KVSA200544	640.3	472+0.5	545.5+0.5	547	542.5-0.5	474	6	105	630	188	740	123	325	585	28-M12 Deep 20	498	32-M14	0～0.08	0～0.05
KVSA200644	742.3	572+0.6	645.5+0.6	647	642.5-0.6	574	6	122	732	200	880	131	385	685	32-M12 Deep 20	598	36-M14	0～0.08	0～0.05
KVSA200744	838.1	672+0.6	745.5+0.6	767	742.5-0.6	674	6	138	826	211	1010	138	445	785	36-M12 Deep 20	698	40-M14	0～0.08	0～0.05
KVSA200844	950.1	772+0.6	845.5+0.6	847	842.5-0.6	774	8	117	936	222	1150	145	510	885	36-M12 Deep 20	798	40-M14	0～0.08	0～0.05
KVSA200944	1046.1	872+0.7	945.5+0.7	947	942.5-0.7	874	8	129	1032	231	1280	151	570	985	40-M12 Deep 20	898	44-M14	0～0.08	0～0.05
KVSA201094	1198.1	1022+0.7	1095.5+0.7	1097	1092.5-0.7	1024	8	148	1184	244	1490	160	660	1135	44-M12 Deep 20	1048	48-M14	0～0.08	0～0.05

KVSA Series Four-Point Contact Ball Slewing Bearing

Model	Outer Diameter Da	Bore d	Major Inner Dia di	Outer Ring Inner Dia Di	Outer Ring Outer Diameter D	Inner Ring Outer Diameter da	Module m	Teeth Number z	Pitch Circle Diameter do	Axial Dynamic Load Ca	Axial Static Load Coa	Radial Dynamic Load Cr	Radial Static Load Cor	Outer Ring PCD1	Mount Hole	Inner Ring PCD2	Mount Hole	Radial Clearance	Axial Clearance
KVSA250755	898	655	657	753	755	757	9	98	882	460	2250	300	1010	816	24-M20 Deep 40	695	24-M22	0.03～0.13	0.05～0.24
KVSA250855	997	755	757	853	855	857	9	109	981	485	2550	315	1150	916	28-M20 Deep 40	795	28-M22	0.03～0.13	0.05～0.24
KVSA250955	1096	855	857	953	955	957	9	120	1080	500	2850	330	1280	1016	30-M20 Deep 40	895	30-M22	0.03～0.13	0.05～0.24
KVSA251055	1198	955	957	1053	1055	1057	10	118	1180	520	3150	340	1410	1116	30-M20 Deep 40	995	30-M22	0.03～0.13	0.05～0.24

KVLA20 Series 4-Point Contact Ball Slewing Bearing

Model	Outer Diameter D	Outer Ring Inner Diameter (Spigot d1zt+IT8)	Outer Ring Inner Dia d1	Bore d	Bore (dzt+IT8)	Inner Ring Outer Dia D1	Module m	Teeth Number z	Pitch Circle Diameter do	Axial Dynamic Load Ca	Axial Static Load Coa	Radial Dynamic Load Cr	Radial Static Load Cor	Outer Ring PCD1	Mount Hole Quantity na	Inner Ring PCD2	Mount Hole Quantity ni
KVLA200414	503.3	417	415.5	304	304+0.5	412.5	5	99	495	169	295	111	110	455	10	332	12
KVLA200544	640.3	547	545.5	434	434+0.5	542.5	6	105	630	188	385	123	145	585	14	462	14
KVLA200644	742.3	647	645.5	534	534+0.6	642.5	6	122	732	200	455	131	171	685	16	562	16
KVLA200744	838.1	747	745.5	634	634+0.6	742.5	6	138	828	211	530	138	198	785	16	662	16
KVLA200844	950.1	847	845.5	734	734+0.6	842.5	8	117	936	222	600	145	224	885	18	762	18
KVLA200944	1046.17	947	945.5	834	834+0.7	942.5	8	129	1032	231	670	151	250	985	20	862	20
KVLA201094	1198.17	1097	1095.5	984	984+0.7	1092.5	8	148	1184	244	770	160	290	1135	20	1012	20

KVLU Series Four-Point Contact Ball Slewing Bearing

Model	Outer Diameter D	Outer Diameter Tolerance (Dzt-IT8)	Outer Ring Inner Dia d1	Bore d	Bore Tolerance (dzt+IT8)	Inner Ring Outer Dia D1	Axial Dynamic Load Ca	Axial Static Load Coa	Radial Dynamic Load Cr	Radial Static Load Cor	Outer Ring PCD1	Mount Hole Quantity na	Inner Ring PCD2	Mount Hole Quantity ni
KVLU200414	518-0.5	516	415.5	304+0.5	306	412.5	169	295	111	110	490	8	332	12
KVLU200544	648-0.5	646	545.5	434+0.5	436	542.5	188	385	123	145	620	10	462	14
KVLU200644	748-0.6	746	645.5	534+0.6	536	642.5	200	455	131	171	720	12	562	16
KVLU200744	848-0.6	846	745.5	634+0.6	636	742.5	211	530	138	198	820	12	662	16
KVLU200844	948-0.6	946	845.5	734+0.6	736	842.5	222	600	145	224	920	14	762	18
KVLU200944	1048-0.7	1046	945.5	834+0.7	836	942.5	231	670	151	250	1020	16	862	20
KVLU201094	1198-0.7	1196	1095.5	984+0.7	986	1092.5	244	770	160	290	1190	16	1012	20

Why Choose Our Four Point Contact Ball Bearings with External Gear?

Four point contact ball bearings with external gear are designed to handle both radial and axial loads, making them ideal for applications where high load capacity is required. These bearings feature a unique design that allows the balls to make contact with both the inner and outer raceways, providing four points of contact, which enhances their load-bearing capabilities. The external gear ensures efficient transmission of torque, making these bearings suitable for high-stress environments.

These bearings are commonly used in industries such as construction, mining, and heavy manufacturing, where machinery is subjected to extreme conditions. The precision engineering and high-quality materials used in our bearings ensure that they can withstand the rigors of these environments, reducing downtime and increasing productivity.

Compared to other bearing types, our four point contact ball bearings with external gear offer a more stable and robust solution. They are designed to last longer under heavy loads, reducing the need for frequent replacements and maintenance. This makes them an excellent choice for applications where reliability and performance are paramount.

High load capacity due to four-point contact design
Durable construction for long-lasting performance
Suitable for heavy-duty machinery in various industries

Key Technical Attributes

STEP 1

Enhanced Load Distribution

The four-point contact design allows for even distribution of both radial and axial loads, reducing stress on individual bearing components and extending service life.

STEP 2

High-Quality Chrome Steel

Constructed from premium chrome steel, these bearings offer superior strength and resistance to wear, ensuring consistent performance even under heavy loads.

STEP 3

Precision Tolerance P4

Manufactured to a precision tolerance of P4, these bearings provide accurate and reliable operation, critical for maintaining machinery efficiency and reducing vibration.

STEP 4

Rubber Seal for Protection

Equipped with a rubber seal, these bearings are protected from contaminants and moisture, which can cause premature failure, thus enhancing their durability in harsh conditions.