FAG 1310-K-TVH-C3 Bearing Wholesale Supplier for Bulk Orders

The “K” suffix is not a minor detail; it is a mounting constraint that renders the bearing useless without its matching adapter sleeve.

The FAG 1310-K-TVH-C3 is a self-aligning ball bearing with a 50 mm bore, 110 mm outer diameter, and 27 mm width, featuring a 1:12 tapered bore (K) and C3 internal clearance. It strictly requires an H310 adapter sleeve for installation on cylindrical shafts. Procuring this unit without the corresponding H310 kit results in immediate installation failure.

I still recall the humid air in the workshop on Sulawesi Island, where the silence of a stopped crusher was louder than the usual roar of machinery. A client pointed at a pallet of freshly unboxed bearings, furious. We had shipped hundreds of units, but the maintenance team could not mount a single one. I had spent years in quality control, focusing on vibration levels and radial play, assuming that a bearing was a standalone component. In bulk trading, however, the context changes. The “K” in the part number indicated a tapered bore, designed to slide onto a tapered surface. Since the crusher shafts were cylindrical, the bearings needed H310 adapter sleeves to create that taper. The sleeves were missing from the consolidation. The production line stayed down for days while we air-freighted the correct accessories. That incident reshaped how I view every specification sheet. [NEED_CITE: mechanical mounting principles for tapered bore bearings]

This experience highlights a critical gap in global MRO procurement. Buyers often search for the bearing alone, overlooking the mandatory accessory kit. As a FAG 1310-K-TVH-C3 bearing wholesale supplier for bulk orders, ensuring that every tapered-bore unit is paired with its specific sleeve is not just a service; it is a technical necessity.

What Are the Core Dimensions & Load Specs of 1310-K-TVH-C3?

Understanding the physical matrix of the FAG 1310-K-TVH-C3 is the first step in verifying compatibility with existing housing and shaft designs.

The dimensional stability of this bearing follows ISO standards, ensuring interchangeability across brands that adhere to these norms. For procurement teams, verifying these metrics against original equipment manufacturer (OEM) drawings prevents costly mismatches during site assembly. The bearing features a polyamide cage (TVH), which offers high strength and low friction, suitable for moderate to high speeds. [NEED_CITE: ISO dimensional standards for radial bearings]

Parameter	Specification	Note
Bore Diameter (d)	50 mm	Tapered 1:12 (K)
Outer Diameter (D)	110 mm	Standard metric
Width (B)	27 mm	Includes cage
Cage Material	Polyamide (TVH)	High-speed capable
Clearance Class	C3	Greater than normal

The C3 clearance is a vital specification for heavy industries. In standard conditions, normal clearance (CN) suffices. However, in environments with significant thermal expansion, such as mining crushers or steel mill conveyors, the inner ring expands more than the outer ring due to heat generation and load. C3 clearance provides the necessary extra space to prevent the rolling elements from jamming. [NEED_CITE: ISO radial internal clearance standards]

A European wind farm operator once replaced a series of generators using standard clearance bearings. Within months, several units seized due to thermal expansion under continuous load. Switching to C3 variants resolved the issue. For buyers sourcing the FAG 1310-K-TVH-C3, confirming the C3 designation is as important as checking the dimensions. Ignoring this can lead to premature failure, especially in tropical or high-friction applications.

When evaluating quotes from a FAG 1310-K-TVH-C3 bearing wholesale supplier for bulk orders, ensure that the C3 clearance is explicitly stated in the invoice and packing list. Ambiguity here often leads to the delivery of standard CN units, which may not survive the operational stresses of heavy machinery.

Why Does the “K” Suffix Mandate an H310 Adapter Sleeve?

The “K” suffix indicates a 1:12 tapered bore, which cannot be mounted directly on a standard cylindrical shaft without an adapter.

Many buyers mistake the tapered bore for a feature that allows direct mounting on slightly worn shafts. In reality, the taper is designed to work in conjunction with an adapter sleeve or a tapered shaft seat. For the 1310 series, the matching component is the H310 adapter sleeve. This sleeve converts a cylindrical shaft into a tapered seating surface, allowing the bearing to be driven up the taper to achieve a precise fit. [NEED_CITE: FAG technical product information on adapter sleeves]

Without the H310 sleeve, the FAG 1310-K-TVH-C3 has no way to secure itself to a straight shaft. Attempting to force it on will damage the bore and the shaft surface. The sleeve also includes a lock nut and locking washer, which secure the bearing axially and maintain the preload.

Component	Function	Necessity
Bearing (1310-K)	Supports radial/axial loads	Primary Unit
Adapter Sleeve (H310)	Creates tapered seat on cylindrical shaft	Mandatory for K-bore
Lock Nut	Secures bearing axial position	Mandatory
Locking Washer	Prevents nut loosening	Mandatory

In a recent project for a cement plant in Southeast Asia, a procurement manager ordered only the bearings to save costs, assuming the local workshop had generic sleeves. The H310 sleeves have specific thread pitches and dimensions that must match the bearing bore exactly. Generic sleeves did not fit, causing a week-long delay. This underscores why sourcing the complete kit is essential. [NEED_CITE: mechanical fitting practices for tapered bearings]

As a FAG 1310-K-TVH-C3 bearing wholesale supplier for bulk orders, we verify that every tapered-bore bearing is accompanied by its correct H310 kit. This prevents the “missing link” scenario that halts production lines. The sleeve is not an optional accessory; it is an integral part of the mounting system.

Buyers should always request the full part number including the sleeve when placing orders. If the quote lists only the bearing, clarify immediately. The cost of the sleeve is negligible compared to the downtime caused by its absence.

How to Verify the Complete Kit Before Shipment?

A systematic cross-check of the bearing, sleeve, and locking components ensures that the received goods are ready for immediate installation.

Verification begins at the documentation stage. The commercial invoice and packing list must detail not just the bearing quantity, but also the matching adapter sleeves. For the FAG 1310-K-TVH-C3, this means checking for H310 sleeves in equal quantity. Discrepancies here are common in mixed-brand consolidations where pickers may overlook the suffix implications. [NEED_CITE: best practices for MRO inventory verification]

1. Check Part Numbers: Confirm that the bearing ends in “-K” and the sleeve is listed as “H310”. Mismatched series (e.g., H309 for a 1310 bearing) will not fit.
2. Inspect Packaging: Genuine kits often come in coordinated packaging. While loose packing occurs in bulk, each bearing should have its corresponding sleeve nearby or clearly labeled in the same box.
3. Visual Inspection of Threads: The H310 sleeve threads should be clean and undamaged. Rust or burrs on the threads can prevent the lock nut from tightening properly, leading to bearing creep.
4. Verify Locking Components: Ensure the lock nut and locking washer are present. These are small but critical. Missing them means the bearing cannot be secured.

A Middle East steel mill once received a container of bearings where the sleeves were packed in a separate, unlabeled crate. The site team assumed they were spare parts for other machines and used incorrect sleeves from stock. The resulting misalignment caused vibration issues that took weeks to diagnose. Proper labeling and kit verification would have prevented this. [NEED_CITE: supply chain accuracy in industrial spare parts]

When working with a FAG 1310-K-TVH-C3 bearing wholesale supplier for bulk orders, request a pre-shipment photo or video of the packed goods if possible. This simple step can reveal missing components before they leave the warehouse. It shifts the verification burden from the chaotic site environment to the controlled staging area.

What Happens if You Ignore the C3 Clearance in Heavy Mining?

Using standard clearance bearings in high-temperature mining applications leads to thermal seizure and catastrophic shaft damage.

Mining environments are harsh. Crushers and screens operate under heavy loads, generating significant heat. The inner ring of the bearing heats up and expands. If the internal clearance is too tight (standard CN), the rolling elements lose their freedom of movement. They begin to skid rather than roll, generating even more heat. This positive feedback loop ends in seizure. [NEED_CITE: thermal expansion effects on bearing internal clearance]

The C3 clearance in the FAG 1310-K-TVH-C3 is designed to accommodate this expansion. It provides a buffer zone that maintains proper rolling contact even when the metal expands. Ignoring this specification is a common error among buyers who prioritize availability over technical suitability.

Condition	Standard Clearance (CN)	C3 Clearance
Normal Temperature	Optimal	Acceptable
High Temperature	Risk of Seizure	Optimal
Heavy Load	Moderate Performance	Enhanced Stability
Thermal Expansion	Insufficient Margin	Adequate Margin

In a copper mine in South America, a batch of standard clearance bearings was installed as a cost-saving measure. During the hot season, multiple units failed within weeks. The investigation revealed that the internal clearance had closed completely due to thermal expansion. Replacing them with C3 variants extended the service life significantly. [NEED_CITE: case studies on bearing failure in mining industry]

For buyers sourcing the FAG 1310-K-TVH-C3, specifying C3 is non-negotiable for heavy industry applications. It is not a premium upgrade; it is the baseline requirement for reliability in demanding conditions. A FAG 1310-K-TVH-C3 bearing wholesale supplier for bulk orders should automatically default to C3 for mining and heavy machinery quotes unless specified otherwise.

Conclusion

Correct specification and complete kitting are the foundations of reliable industrial maintenance.

The FAG 1310-K-TVH-C3 is a robust solution for heavy-duty applications, but its effectiveness depends on proper mounting and clearance selection. The tapered bore requires the H310 adapter sleeve, and the harsh operating conditions demand C3 clearance. Overlooking these details leads to preventable downtime and increased operational costs. By verifying dimensions, ensuring complete kits, and respecting clearance requirements, buyers can secure the longevity of their machinery. Partnering with a knowledgeable FAG 1310-K-TVH-C3 bearing wholesale supplier for bulk orders ensures that these technical nuances are managed proactively, delivering site-ready solutions that keep operations running smoothly.