687RZ

6800 SeriesRZ

GDQV 687RZ deep groove ball bearing, 7×14×5mm, single rubber seal (light-contact type), good sealing with moderate friction. Rated dynamic load 0.93kN, rated static load 0.46kN. Typical applications: Automotive.

Technical Drawing

D = 14d = 7B = 5All dimensions in mmDimension reference diagram — not a manufacturing drawing尺寸参考图 — 非制造图纸

Technical Specifications

Bore (d)7 mm
Outer Diameter (D)14 mm
Width (B)5 mm
Dynamic Load (C)0.93 kN
Static Load (C₀)0.46 kN
Limiting Speed (Grease)40,000 rpm
Limiting Speed (Oil)45,000 rpm
Internal ClearanceC0
MaterialGCr15
Precision GradeP0

Seal Design Notes

Seal construction
An RZ sealing ring made of nitrile rubber (NBR) on one side; the opposite side is open.
What it shields
The ring helps limit contaminant entry and grease escape on the sealed side. The factory table does not specify contact geometry or a water-resistance rating.
Effect on speed
The listed grease-lubricated limiting speed is 100% of the open version for the same base model. This is a speed-rating comparison, not a claim of zero seal friction.
Lubrication
The factory table lists both grease and oil lubrication. Check the model-specific oil speed and lubricant supply through the open side.
When to choose it
Consider RZ when one NBR sealing ring and the listed open-version grease speed suit the application, with the opposite side protected by the assembly.

Key Features

  • Standard dimensions: 7mm bore × 14mm OD × 5mm width
  • Single rubber seal for contamination protection
  • Dynamic load rating: 0.93kN | Static load rating: 0.46kN
  • Grease speed limit: 40,000 r/min | Oil speed limit: 45,000 r/min
  • Bearing steel, internal clearance and precision grade pending

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