Double Row Deep Groove Ball Bearing

Double Row Deep Groove Ball Bearing

When two separate single-row bearings are used side by side to meet load requirements, the result is extra bulk, tolerance stack-up between the two rows, and wasted axial space. Our double row integrated bearing solves this in a single unit: both raceways machined from the same inner and outer ring blanks, with enlarged rolling elements fitting a thicker-walled ring — improving load capacity, concentricity, running precision, and noise level simultaneously. Available as standard double-row or fully custom-integrated; dimensionally compatible with SKF 3200/3300 and FAG 3200 series for direct replacement.

• Configuration: Two rows of ball rolling elements in a single integrated unit
• Load Gain: Custom version achieves ≥30% higher load vs. standard double-row
• Concentricity: Single-piece ring construction — no tolerance stack-up between rows
• Footprint: More compact than two separate single-row bearings with spacers
• SKF/FAG Compatible: Dimensionally compatible with SKF 3200/3300 and FAG 3200 series — drop-in upgrade path

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Double the Parts, Double the Complexity

A standard double row deep groove ball bearing replaces two single-row bearings and their accompanying spacers, covers, and retaining hardware with a single compact unit. The result is reduced axial length, fewer components to source and stock, and a simpler assembly process that lowers both build cost and failure risk.

When load requirements exceed single-row capacity, engineers often resort to pairing two individual bearings with an intermediate spacer. This approach increases the number of parts, extends axial length, adds assembly steps, and creates more potential failure points — all of which drive up the total cost of ownership.

Tolerance Stack-Up Undermines Both Rows

In our custom integrated double row bearing, both raceways are machined from the same inner and outer ring blanks in a single setup. This guarantees that the two rows share a common axis — eliminating the concentricity error that occurs when two separate bearings are individually pressed into a housing. The result is even load distribution across both rows, consistent service life, and more predictable performance over millions of cycles.

When two separate single-row bearings are pressed independently, manufacturing tolerances accumulate. The axis of one bearing row rarely aligns perfectly with the other, causing one row to carry a disproportionate share of the load. Over time, the overloaded row wears faster, reducing the life advantage that the dual-row arrangement was intended to provide.

When Standard Double-Row Isn't Enough

For applications where even a standard double row bearing cannot meet load requirements, our custom integrated version provides a further upgrade path. By designing the inner and outer rings with increased wall thickness and fitting larger rolling elements, we achieve ≥30% higher dynamic load rating within the same outer dimensional envelope — without requiring a redesign of the housing or shaft.

Standard double row ball bearings are constrained by catalog dimensions: ring wall thickness and rolling element diameter are fixed. If load requirements grow beyond the catalog rating, the only traditional option is to step up to a larger bearing series — which forces costly housing and shaft redesigns. Our custom approach breaks this constraint.