UCP218

• Dimensions

  Attachment bolt diameter	22 mm
  Shaft diameter	90 mm
  Centre height (pillow block)	101.6 mm
  Housing overall width	88 mm
  Centre distance between bolt holes	262
  Bearing width, total	96 mm

  Performance

  Basic dynamic load rating	95.6 kN
  Basic static load rating	72 kN
  Oil Limiting speed	1600 r/min

• Properties

  
  

  Housing type	Pillow block, normal base
  Number of bolt holes for fasteners	2
  Fastening bolt hole type	Plain
  Retaining feature, inner ring	Set screws
  Bore type	Cylindrical
  Material, housing	Cast iron
  Material, bearing	Bearing steel
  Coating	Without
  Sealing, bearing	Seal and flinger on both sides
  Sealing type	Contact, standard
  Sealing, unit	Without
  Lubricant	Grease
  Relubrication hole	With
  Grease fitting	With

• Weight and Material

  Product net weight

  15 kg

1. What is a UCP218 Bearing? What do the letters and numbers in the model represent?
UCP218 is a common type of pillow block ball bearing (or insert bearing with housing). It combines an insert bearing (UC series) and a cast iron housing (P series) into a ready-to-mount unit. Its model number typically follows a specific naming convention:

• UC: Represents the insert ball bearing series (specifically the wide inner ring type with set screws).

• P: Represents the Pillow block (plummer block) housing.

• 218: Indicates the size series of the bearing, where "18" typically relates to the bearing's bore diameter.
  Therefore, UCP218 means that the bearing part is UC218, and the matching pillow block housing is P218.

2. What are the main structural features of UCP218?
The main features of UCP218 make it a reliable and easy-to-use choice in industrial applications:

• Ready-to-Mount Unit: The bearing and housing are pre-assembled and pre-lubricated at the factory, simplifying design and installation processes.

• Self-Alignment Capability: Because the bearing's outer sphere matches the concave spherical surface of the housing, it can automatically compensate for installation errors or shaft deflection, typically up to ±3°.

• Easy-to-Install Locking Device: Usually employs setscrews to lock the bearing inner ring onto the shaft, making installation simple and quick.

• Effective Sealing: The bearing is equipped with sealed shields on both sides as standard, effectively preventing contaminants from entering and extending bearing life.

• Robust Housing: The housing is typically made of cast iron, providing sturdy support.

Specifications, Dimensions, and Performance Parameters

3. What are the specific dimensions of UCP218?
According to information from various manufacturers (such as NSK), the standard main dimensions for UCP218 are as follows:

• Shaft Diameter: 90 mm

• Overall Length: 327 mm

• Center Height: 101.6 mm (height from the mounting surface to the shaft centerline)

• Mounting Bolt Center Distance: 262 mm

• Housing Width: 88 mm

• Inner Ring Width: 96 mm

• Mounting Bolt Size: Typically accommodates M22 bolts

4. What is the load capacity of UCP218?
UCP218 has good load-carrying capacity, primarily designed for radial loads. Its basic load ratings are approximately:

• Basic Dynamic Load Rating: Approx. 96 kN

• Basic Static Load Rating: Approx. 71.5 kN

5. What applications is UCP218 suitable for?
Due to its durability and ease of use, UCP218 is widely used in various industrial fields, especially agricultural machinery (such as harvesters), conveyor systems, ventilation equipment, material handling, and textile machinery.

Installation and Maintenance

6. What should be noted when installing UCP218?
Correct installation is crucial to ensuring bearing performance and life. Here are some key steps and considerations:

• Preparation: Clean the shaft and bearing housing, removing all dirt and residues. Apply a thin layer of lubricating oil to the shaft surface to reduce friction.

• Installation Process: Place the unit onto the shaft at the desired position, ensuring the housing is level and aligned with the shaft. If the bearing is not pre-fitted, insert it into the lower half of the housing first. Then install the upper half, ensuring the two halves of the housing are precisely aligned.

• Bolt Tightening: Tighten the housing fixing bolts following the manufacturer's instructions, using the recommended torque values and the correct sequence. Avoid over-tightening, which can deform the housing or damage the bearing.

• Post-Installation Check: Rotate the shaft manually to check if the rotation is smooth without binding. Check if the bearing's axial and radial clearances are within specified limits. If possible, perform a vibration analysis to confirm proper installation.

7. Regarding the warranty for UCP218, what are the general provisions?
Like other industrial components, UCP218 bearing units typically come with a warranty. The warranty policy is the supplier's commitment to the quality of their product.

• Warranty Coverage: Usually covers defects in materials and workmanship.

• Warranty Void: Damage caused by improper installation, misuse, accident, or normal wear and tear is typically not covered.

• Important Note: To ensure the warranty remains valid, it is essential to follow the installation and maintenance instructions provided by the supplier. It is advisable to confirm the specific warranty terms and duration with the supplier at the time of purchase.