Name: U1376H13 1.4mm Wire Feed Roller | OTC Wire Feeder Spare Parts
Brand: OTC DAIHEN
SKU: U1376H13

OTC Daihen Genuine Wire Feed Roller U1376H13 (1.4mm Dedicated)

U1376H13 is the genuine OTC Daihen wire feed roller specifically engineered for 1.4mm diameter welding wire. Constructed from premium high-strength alloy steel and treated with advanced surface induction hardening and precision groove machining, this roller delivers superior frictional grip without scratching the wire surface. Developed for heavy-duty, high-current gas-shielded welding applications (including carbon steel, stainless steel, and flux-cored wires), it eliminates wire slippage, cross-sectional deformation, and feeding pulsation, ensuring consistent arc stability and smooth wire delivery.

OTC Daihen Genuine Wire Feed Roller U1376H13 Front View — Figure 1: OTC Genuine 1.4mm Wire Feed Roller U1376H13 Front View

⚙️ Core Technical Specifications

Specification Attribute	Detailed Parameter
Part Number	U1376H13
Product Type	Wire Feeder Main Drive Roller
Compatible Wire Diameter	1.4mm Diameter (Carbon Steel, Stainless Steel, Flux-Cored Wires)
Material & Processing	High-strength alloy steel with induction surface hardening
Quality Commitment	100% genuine original factory part, precision groove profile

OTC Wire Feed Roller U1376H13 Side Details — Figure 2: Surface Induction Hardened Layer & Profile Details

Figure 3: Precision 1.4mm Groove Profile Close-Up

🔧 On-Site Installation & Maintenance Guide

Pressure Arm Adjustment Discipline: Avoid excessive clamping pressure, which flattens 1.4mm wire into an elliptical cross-section. Flattened wire causes severe liner binding and copper shaving accumulation. Adjust pressure to the critical threshold where wire just begins to slip when blocked at the contact tip.
Groove Orientation Check: Ensure the marked side showing “1.4” faces outward upon installation. Installing dual-groove rollers backward results in improper groove sizing, wire surface scoring, and erratic feeding.
Keep Groove Clean & Dry: Never apply grease or lubricating oil to roller grooves. Oil traps copper flakes and shop dust, filling the groove profile and causing wire slippage. Clean weekly with compressed air.
Inspect Associated Feed Line Components: If wire feeding issues persist after roller replacement, inspect the wire feeder conduit liner for accumulated debris and check the contact tip for bore enlargement or burnback damage.