What are the two basic bearing housings?
Two-bearing housing Housings are available in many sizes and generally fall into five standard categories: Split Plummer (or pillow) block housings, Non-split Plummer block housings, flanged housings, take-up housings, and two-bearing housings.
What is the specification of Plummer block?
Basic Information
| Unit, Type | Plummer Block |
|---|---|
| Unit Body Material | Gray Cast Iron (FC 200) |
| Bearing Inner Dia. Shape | Cylindrical Bore |
| Surface Treatment | No |
What is difference between Sn and SNL plummer block?
SNL plummer block housings are fully interchangeable with the earlier SNH housings. Their dimensions con- form to ISO 113:1994. SNL plummer block housings are prim- arily intended for self-aligning ball bear- ings, spherical roller bearings and CARB bearings. The housings are designed on a “building block” principle.
Which material is used for bearing housing?
Grey cast iron, spheroidal graphite cast iron and cast steel are the most common materials of construction for bearing housings. Grey cast iron is most commonly used and is sufficient for the majority of applications, offering a combination of high strength, good damping and good thermal conductivity.
What are bearing housing made of?
The bearing chamber housing is traditionally manufactured from cast steel alloy, but has also been made from cast nickel alloy.
What is pillow block housing?
A pillow block usually refers to a housing with an included anti-friction bearing, wherein the mounted shaft is in a parallel plane to the mounting surface, and perpendicular to the center line of the mounting holes, as contrasted with various types of flange blocks or flange units.
What is locating ring in plummer block?
SKF FRB Locating Rings are used to secure a Bearing in Place in the housing on both sides of the shaft. Locating rings are identified with the Prefix ‘ FRB’ followed by the width and the Outside diameter. E.g an Outside Diameter of 120mm and a Width of 2mm gives the part number FRB2/120 or Also FRB2.
What is a labyrinth seal used for?
Labyrinth seals are a critical component applied across rotating equipment to seal high pressure areas from low pressure areas and prevent contamination of the process. Designed as a non-contacting seal with a precise clearance over the rotor, labyrinth seals directly affect equipment efficiency.
What is locating ring in Plummer block?
What is normal clearance of bearing?
Radial bearing clearance is broken down into several groups: C1, C2, CN, C3, C4, and C5. CN is the “normal clearance” and is defined by DIN 620 and ISO 5753 and is used for bearings in normal operating conditions; C1 and C2 class bearing have radial clearances smaller than CN.
What are the different types of bearing housings?
Type:- BND bearing housings are single piece construction (non-split bearing housing) suitable for spherical roller bearings of series 222. 230. 231 and 232 series. The BND housings are designed for grease lubrication. Suitable grease nipples are provided on housings.
What kind of bearings are used in plummer block housings?
Bearing arrangement design SNL plummer block housings are typically used with self-aligning ball bearings, spher- ical roller bearings or CARB toroidal roller bearings fitted on straight or stepped shafts; the bearings can be mounted on adapter or withdrawal sleeves or directly on cylindrical shaft seats.
What are BND bearings and what are they used for?
BND bearing housings are single piece construction (non-split bearing housing) suitable for spherical roller bearings of series 222. 230. 231 and 232 series. The BND housings are designed for grease lubrication. Suitable grease nipples are provided on housings.
What kind of bearings do NTN Bearings use?
The NTN bearing unit is a combination of a radial ball bearing, seal, and a housing of high-grade cast iron or pressed steel, which comes in various shapes. The outer surface of the bearing and the internal surface of the housing are spherical, so that the unit is self-aligning.