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Industrial · SKU: GQ7802
Steel Mini Ball Bearing 0.31in Bore 0.87in OD for Machinery, Pkg Qty 100
Designed for precision machinery applications, these steel mini ball bearings feature a 0. 31-inch bore diameter and a 0.
Volume Pricing - Buy More, Save More
| Quantity | Discount | Unit Price |
|---|---|---|
| 1 - 10 | - | $59.99 |
| 11 - 50 | -5% | $56.99 |
| 51+ | -10% | $53.99 |
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Quick Answer
How Buyers Should Evaluate Steel Mini Ball Bearing 0.31in Bore 0.87in OD for Machinery, Pkg Qty 100
Designed for precision machinery applications, these steel mini ball bearings feature a 0. 31-inch bore diameter and a 0. Use the quick checks below to decide whether direct checkout is enough or whether an RFQ will reduce sourcing risk.
Quick Spec Check
- Bore Diameter: 0.31 in
- Outside Diameter: 0.87 in
- Material: Steel
Purchase Details
- Online price starts at $59.99.
- Minimum order quantity: 1 unit.
- Pack quantity: 100 / Each.
- Lead time: 2-3 weeks.
Use RFQ When
- Use RFQ when you need bulk pricing, alternate pack sizes, or multi-SKU comparison.
- Request support when fit, material, or substitute selection needs confirmation before order.
- Escalate to sourcing when timeline, freight, or stocking strategy matters more than one-off checkout speed.
Technical Specifications
| Bore Diameter | 0.31 in |
| Outside Diameter | 0.87 in |
| Material | Steel |
| Inside Diameter | 0.31 in |
| Length | 0.28 in |
Full Description
Application context, construction notes, and selection details for evaluating fit before purchase or repeat ordering.
Overview
This industrial-grade mini ball bearing is engineered for high-precision rotational applications where space constraints and reliability are paramount. Constructed from robust steel, the unit features a compact design with a 0.31-inch bore diameter and a 0.87-inch outside diameter, making it ideal for integration into small-scale machinery and electric motors. The double-shielded configuration effectively seals internal lubrication while preventing the ingress of dust, debris, and moisture, ensuring consistent performance in challenging operational environments. By minimizing friction and heat generation, these bearings support high-speed rotation and extend the service life of critical mechanical components. Supplied in bulk packages of 100 units, this solution offers an efficient inventory management option for original equipment manufacturers and maintenance facilities requiring reliable replacement parts.
Key Features
Double-shielded design retains lubrication and excludes contaminants High-carbon steel construction ensures durability under load Precision-ground races provide smooth, low-friction rotation Compact 0.28-inch width fits tight spatial requirements Rated for high-speed rotational applications Bulk packaging of 100 units reduces per-unit procurement costs Consistent dimensional accuracy for seamless OEM integration
Specifications
Bore Diameter: 0.31 in Outside Diameter: 0.87 in Width: 0.28 in
Material
Steel Shield Type: Double Shielded (2Z) Inside Diameter: 0.31 in Package Quantity: 100 units Load Capacity: Suitable for radial and moderate axial loads Surface Finish: Polished raceways for reduced wear
Applications
Electric motors and generators Precision instrumentation and medical devices Small gearboxes and transmission systems Conveyor belt rollers and pulley systems Office automation equipment and printers HVAC fan assemblies and blowers Power tools and handheld rotary equipment Automotive auxiliary components and sensors
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