Analysis of the characteristics of spherical ball bearings with seat

**Analysis of the Characteristics of Spherical Ball Bearings with Seat** Home > Bearing Knowledge > Analysis of the Characteristics of Spherical Ball Bearings with Seat **Spherical ball bearings with seat** are widely used in various mechanical systems due to their unique design and performance advantages. These bearings are specifically designed to accommodate misalignment, provide reliable sealing, and ensure long-lasting operation even in harsh environments. One of the key features of spherical ball bearings with seat is their **active centering function**. The outer diameter of the bearing fits precisely with the inner diameter of the housing, allowing for automatic alignment and compensating for any misalignment caused by installation errors or deformation of the base. These bearings are capable of handling **significant radial and axial loads**, thanks to their internal design that is similar to deep groove ball bearings from the 6200 and 6300 series. This makes them ideal for applications where high load capacity is required. Additionally, they operate with **low noise levels**, ensuring smooth and quiet performance. The **long service life** of these bearings is another major advantage. They are often used in environments with dirt, dust, moisture, and high temperatures, which can quickly degrade the lubricant. However, many models, such as the IB cast iron spherical ball bearings, come with a grease nipple that allows for easy re-lubrication. This ensures consistent performance and extends the lifespan of the bearing under all conditions. The **sealing system** of spherical ball bearings is also highly effective. They typically feature a combination of a heat-resistant, oil-proof rubber seal and a steel plate dust cover. This dual-seal system prevents external contaminants like dust and moisture from entering the bearing while also preventing the lubricant from leaking out. This ensures that the bearing continues to perform optimally in even the most challenging working conditions. Another important characteristic is the **rigid housing design**. The cast iron seat provides excellent structural integrity, preventing deformation during installation and ensuring durability in all types of operating environments. These bearings can be **easily locked onto the shaft** using multiple methods, such as set screws on the inner ring, adapter sleeves, or lock nuts. This flexibility makes installation and maintenance more straightforward. Some models also feature **special heat treatment** on the inner ring. The raceway and surrounding areas are hardened through normal quenching, while the area near the set screw is tempered at high temperatures to maintain toughness and resistance to impact. This enhances the bearing's overall performance and prevents loosening of the set screws during operation. A **common stop pin (or ball)** is installed on the outer ring to prevent rotation and help with alignment, further increasing the bearing’s service life. Spherical ball bearings with seat are **interchangeable** with their housings, as both are precision-machined. This allows for easy replacement and reduces downtime. Lastly, the **simple design** of these bearings means they come pre-greased with high-quality lubricant, making them ready for direct mounting on the shaft. This helps protect the bearing from harmful contaminants and ensures reliable operation. **Related Articles:** - Small Four-Wheel Tractor Bearing Wear Analysis - New Skills and Development in Bearing Ring Grinding - Judging Damage in Superfine Cylindrical Roller Bearings - Understanding the Installation Process of Rolling Bearings For more information, visit [China Bearing Network](http://). Previous: The Fundamental Need for Steel in Rolling Bearings Next: Bearing Safety Factor (Word count: 548)

SPR rubber Vertical Slurry Pump

Naipu SPR rubber Vertical Slurry Pumps are vertical, centrifugal slurry pumps submerged in sump to work.They are designed for delivering abrasive,large particle and high density slurries.These pumps have no need of any shaft seal and sealing water. They can also be operated normally for insufficient suction duties.Wet parts of type NP-SP pump are made of abrasion-resistant metal. All parts of type NP-SP(R) pump immersed in liquid are lined with rubber outer liner.They are suited to transport non-edge angle abrasive slurry.

Typical Applications---

Sump drainage washdown
Floor drainage
Mill sumps
Carbon transfer
Monitoring

Magnetite mixing

NP-SPR Construction Drawing

Main Part Number At The Drawing

1.Discharge Pipe 2.Column 3.Strainer 4.Back Liner

5.Impeller 6.Pump Casing 7.Lower Pipe

Materials of Construction

	IMPELLERS	CASING	COLUMN	DISCHARGE	SEALS
Standard	High Chrome Alloy Rubber	High Chrome Alloy Rubber	Mild Steel Mild Steel Rubber Lined	Mild Steel Mild Steel Rubber Lined	Natural Rubber Rubber
Options	Butyl EPDM Hypalon Polyurethane 316 SS W 151	Neoprene Butyl EPDM Hypalon Nitrile 316 SS W 151	Neoprene Butyl Nitrile 316 SS	Neoprene Butyl Nitrile 316 SS	Nordel Neoprene Viton Hypalon Butyl EPDM

Selection Chart

SP SUMP PUMP PERFORMANCE PARAMETERS

Type	Allowable Mating Max. Power(Kw)	Range Of Performance					Impeller
		Capacity/Q		Head/m	Speed/rpm	Max Efficiency/%	No. of Vanes	Impeller Diameter/mm
		m³/hr	L/S
40PV-NP-SP	15	19.44-43.2	5.4-12	4.5-28.5	1000-2200	40	5	188
65QV-NP-SP	30	23.4-111	6.5-30.8	5-29.5	700-1500	50	5	280
100RV-NP-SP	75	54-289	15-80.3	5-35	500-1200	56	5	370
150SV-NP-SP	110	108-479.16	30-133.1	8.5-40	500-1000	52	5	450
200SV-NP-SP	110	189-891	152.5-247.5	6.5-37	400-850	64	5	520
250TV-NP-SP	200	261-1089	72.5-302.5	7.5-33.5	400-750	60	5	575
300TV-NP-SP	200	288-1267	80-352	6.5-33	350-700	50	5	610

Spr Rubber Vertical Slurry Pump,40Pv Rubber Slurry Pump,65Qv Rubber Vertial Pump,100Rv Rubber Slurry Pump

Shijiazhuang Naipu Pump Co., Ltd. , https://www.naipu-pump.com