6215-2RZ Deep Groove Ball Bearing: Dimensions, Specifications, and Selection Guide
The 6215-2RZ is a single-row deep groove ball bearing with nominal dimensions of 75 mm bore × 130 mm outside diameter × 25 mm width. The “2RZ” designation commonly identifies non-contact seals on both sides, but suffix definitions can vary between manufacturers, so confirm the exact seal construction with the supplier before ordering. To determine whether this bearing suits your application, check its dimensions, load and speed requirements, operating environment, clearance, lubrication, and fit.
This guide is intended for bearing distributors, OEM purchasing teams, maintenance buyers, and engineers comparing replacement or new-build options. It explains the standard size, key specification choices, application considerations, and practical supplier questions. Tuoda Bearing can help buyers review a 6215-2RZ inquiry against the required dimensions and operating conditions.
Key Takeaways
- The standard 6215 bearing size is 75 × 130 × 25 mm (bore × outside diameter × width).
- “2RZ” generally indicates two non-contact seals; verify the supplier’s suffix definition and sealing arrangement.
- Confirm load, speed, temperature, contamination, clearance, and fit before treating dimensional compatibility as application suitability.
- Provide your drawing or existing bearing details when requesting a quotation to reduce the risk of a specification mismatch.
Basic Concept and Dimensions
A deep groove ball bearing uses balls running between inner and outer raceways with deep, continuous grooves. This design supports radial loads and can also accommodate axial load in either direction within the bearing’s application limits. The 6215 is a standard-dimension bearing series; the 2RZ suffix describes a configuration detail rather than changing its nominal envelope dimensions.
6215-2RZ Nominal Dimensions
| Parameter | Nominal value | What it describes |
|---|---|---|
| Bore diameter (d) | 75 mm | Diameter of the shaft seat |
| Outside diameter (D) | 130 mm | Diameter of the housing seat |
| Width (B) | 25 mm | Axial bearing width |
These are nominal boundary dimensions, not a complete fit specification. The actual allowable deviations depend on the selected tolerance class and applicable product standard. Check the manufacturer’s drawing and dimensional tolerances when a tight housing or shaft fit is involved.
Specifications and Configuration Choices
Beyond the envelope dimensions, buyers should specify the details that affect installation and operation. A bearing can match the original size while differing in clearance, precision, seal construction, or lubricant. Those differences may affect performance, interchangeability, and service life, so they should be confirmed rather than assumed.
Seals, Clearance, and Precision
In many bearing nomenclature systems, “2RZ” refers to a non-contact seal on each side. Non-contact designs are generally selected when buyers want protection from some contaminants while limiting seal contact, but their performance depends on the particular design and operating conditions. If the application needs stronger protection against water, dust, or washdown exposure, compare the supplier’s available sealing options and ask for the documented construction.
Radial internal clearance is another important selection detail. Normal clearance is often supplied as a standard option, while a different clearance may be needed to account for operating temperature, interference fits, or other assembly conditions. Do not select a clearance solely from a general rule; provide the shaft and housing fit information and expected operating conditions for review.
Precision class should match the equipment’s requirements. A standard tolerance class may be suitable for many general-purpose assemblies, whereas applications with tighter runout or dimensional requirements may call for a higher precision option. Confirm availability, marking, and inspection documentation for the exact configuration being quoted.
Materials and Lubrication
Many standard deep groove ball bearings use bearing steel rings and rolling elements, but material, heat treatment, and lubricant details should be verified for the product offered. Grease type and fill quantity can influence speed capability, temperature behavior, and maintenance needs. If the bearing will operate in a special environment, request the supplier’s relevant material and lubrication information instead of relying on the 6215-2RZ designation alone.
Application Matching
The 6215-2RZ may be considered for machinery with a 75 mm shaft seat and a housing designed for a 130 mm outside diameter and 25 mm bearing width. Deep groove ball bearings are used across a range of rotating equipment, including motors, pumps, fans, and industrial drives, when the load and operating conditions are appropriate. These examples are starting points for evaluation, not confirmation that every 6215-2RZ is suitable for every machine in those categories.
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For automotive-related equipment, verify the specific assembly requirements before substituting a general-purpose bearing. Vehicle and automotive supply applications may require defined durability, traceability, temperature, vibration, or approval criteria. Share the equipment model, original part number, or drawing with the supplier so that dimensional fit can be checked alongside any application-specific requirements.
Selection Framework for Buyers
Step 1: Confirm the Required Envelope
Measure or verify the shaft seat, housing seat, and available axial space. Compare these dimensions with 75 mm, 130 mm, and 25 mm respectively, and check whether shoulders, spacers, or retaining features affect installation. If replacing an existing unit, record the complete bearing marking and consult the equipment documentation where available.
Step 2: Review Loads and Speed
Identify the radial and axial loads, load direction, operating speed, and duty cycle. Compare these conditions with the bearing manufacturer’s published ratings and application guidance for the exact product configuration. Avoid selecting from dimensions alone, because load capacity and permitted speed depend on design details, lubrication, fits, and operating conditions.
Step 3: Specify Environment and Fit
Describe exposure to dust, moisture, chemicals, vibration, and temperature changes. Then provide shaft and housing tolerances, mounting method, and expected temperature so the supplier can assess clearance and fit options. Where contamination control is important, ask specifically how the proposed 2RZ seal is constructed and what limitations apply.
Step 4: Confirm the Order Specification
Before placing an order, align the drawing, full designation, tolerance class, clearance, seal type, lubricant, packaging, and inspection requirements. Ask the supplier to identify any differences between its suffix system and the marking on your existing bearing. A written specification helps purchasing, engineering, and incoming inspection work from the same requirements.
Pricing, MOQ, and Lead Time
The price of a 6215-2RZ can vary with order quantity, product configuration, material and quality requirements, packaging, and delivery terms. Minimum order quantity and lead time are supplier- and order-specific, so they should be confirmed in a current quotation rather than assumed from the bearing number. For a useful quote, include the requested quantity, destination, target delivery date, and any documentation or packaging needs.
For ongoing procurement, compare more than the unit price. Consider specification consistency, batch identification, inspection records, packing suitability, and the supplier’s ability to communicate changes before shipment. These details can help buyers assess sourcing risk without relying on unsupported claims about service life or performance.
Supplier Evaluation Checklist
- Can the supplier confirm the 75 × 130 × 25 mm dimensions and provide a drawing?
- Does its documentation define the 2RZ seal construction clearly?
- Can it confirm clearance, tolerance class, lubrication, and other requested options?
- Are quotation terms, MOQ, lead time, packaging, and delivery terms stated in writing?
- Can the supplier explain available inspection or traceability documents for the quoted product?
Tuoda Bearing supports B2B inquiries for deep groove ball bearings, including specification review and quotation coordination. To help us assess a 6215-2RZ request, send the quantity, application, operating conditions, required configuration, and any existing marking or drawing. We can then review the information with you and clarify which product details need confirmation before purchase.
Conclusion
The 6215-2RZ has nominal dimensions of 75 mm × 130 mm × 25 mm, and its 2RZ suffix commonly denotes non-contact seals on both sides. Those details establish a useful starting point, but they do not alone determine whether the bearing is suitable for a particular machine. Buyers should verify the exact seal definition, clearance, tolerance, lubrication, fits, loads, speed, and environment against the application requirements.
Your next step is to compare the bearing dimensions with the assembly and send the complete requirement to a supplier for confirmation. Include a drawing or original bearing marking whenever possible, along with order quantity and delivery needs. Contact Tuoda Bearing to discuss your 6215-2RZ specification and request a quotation based on your application.