MRC411MDeep Groove Ball Bearing – Straight Bore, 55mm ID, 140mm OD, 33mm Width, Open, Maximum Capacity Filling Slot, Normal Internal Clearance.

Product Description

What this part is

MRC 411M single-row deep groove ball bearing, 55 mm bore, 140 mm outside diameter, 33 mm width. Open on both faces, straight bore, riveted steel cage. The ISO equivalent base number is 6411.

Decoding the designation

The 400 series is the heavy dimension series in the metric ball bearing range, giving a larger outside diameter and section height than a 6300 or 6200 of the same bore. The bore code 11 denotes 55 mm, the bore code multiplied by five. In MRC nomenclature the trailing M marks the bearing as open on both faces, with no shield and no seal.

What these specs mean in practice

A heavy series section carries a higher radial load at a given bore than a lighter series, at the cost of outside envelope and speed. The rated dynamic capacity is 108 kN and the static capacity 90 kN, with a grease limiting speed of 4100 rpm. Deep groove geometry takes radial load and moderate axial load in either direction.

Internal clearance

Normal clearance, CN, in the absence of a clearance suffix. Normal clearance suits a shaft fitted to a standard interference and a housing at a normal bore tolerance, running near ambient temperature.

Quantity and configuration

One piece. Complete bearing, inner ring, outer ring, ball complement and cage.

Fitting notes

An open bearing relies on the housing for retention of lubricant and exclusion of contamination. Mounting force is applied to the ring being fitted, so an inner ring press fit is driven on the inner ring face and an outer ring fit on the outer ring face.

Interchange guidance

Dimensionally interchangeable with an open 6411 from any ISO metric source at the same clearance and cage class.