RMS18-ZZ

Tier-one manufacturer — brand supplied may vary ✓ Bore checked against the ISO table
$141.43 USD
$141.43 USD
Sale Sold out
Bore2-1/4 in 57.15 mm
Outside dia.6-1/4 in 158.75 mm
Width1-1/4 in 31.75 mm
TypeInch-dimension radial ball bearing, medium series
SealingMetal shields, both sides
Ships from US partner stock — flat-rate shipping, calculated by weight at checkout
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Image is for illustration purposes only.

What RMS18-ZZ means

CodePositionMeaning
RMS Type Inch-dimension radial ball bearing, medium series
18 Bore Bore in eighths of an inch: 18/8 = 2-1/4 in
ZZ Closure Metal shields, both sides

Read from the ISO / ABMA numbering rules and the makers' published suffix conventions. Decode any other number with the bearing number decoder.

RMS18-ZZ specifications

Specification Metric Inch Basis
Bore (d) 57.15 mm 2-1/4 in (2.25) ISO table for this designation, confirmed by supplier data
Outside diameter (D) 158.75 mm 6-1/4 in (6.25) Supplier catalogue listing
Width (B) 31.75 mm 1-1/4 in (1.25) Supplier catalogue listing
Bearing type Inch-dimension radial ball bearing, medium series Stated by the designation
Seals / shields Metal shields, both sides Stated by the designation

RMS18-ZZ is an inch-dimension radial ball bearing, medium series, 2-1/4 in bore × 6-1/4 in OD × 1-1/4 in wide (57.15 × 158.75 × 31.75 mm). It has metal shields on both sides.

The RMS18-ZZ is a deep groove ball bearing from the RMS series, featuring double metal shields (ZZ) that provide protection against contaminants while retaining lubrication. Deep groove ball bearings are the most common bearing type, offering versatility for radial and moderate thrust loads in a wide range of industrial applications.

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