2428 19A4 TUK Carbon Brush with 20-25-32 size reference supports B2B excavator parts maintenance, electrical repair, and wholesale stocking.
The 2428 19A4 TUK Carbon Brush YNF17700 is a replaceable electrical wear component intended for compatible rotating electrical equipment used in construction machinery. During operation, electrical current is transferred through the carbon contact surface while continuous sliding contact is maintained against the corresponding rotating component.
This carbon brush carries the supplied 20-25-32 size reference, which should be compared directly with the removed brush before replacement. Carbon block dimensions, lead position, terminal design, spring arrangement, and contact-face shape can vary between applications.
For B2B buyers, the 2428, 19A4, and TUK markings should be checked together with exact dimensions and existing-part photos. Since no specific machine model or electrical-unit reference has been supplied, fitment should not be assumed from appearance alone. Accurate dimensional comparison helps repair workshops and wholesalers reduce incorrect inventory, unnecessary replacement of complete assemblies, customer returns, and repeated international freight.
| Parameter | Specification |
|---|---|
| YNF Part Number | YNF17700 |
| Reference Marking | 2428 |
| Additional Marking | 19A4 |
| Brand / Marking Reference | TUK |
| Product Name | Carbon Brush |
| Alternative Name | Electrical Carbon Brush / Motor Brush / Conductive Brush |
| Product Type | Replaceable Electrical Contact Component |
| Parts Category | Construction Machinery Electrical Parts |
| Size Reference | 20-25-32 |
| Main Function | Electrical Current Transfer Through Sliding Contact |
| Application | Compatible Rotating Electrical Equipment |
| Installation | Brush Holder / Electrical Contact Position |
| Material | Carbon-Based Conductive Material |
| Machine Model | To Be Confirmed by Physical Fitment |
| Fitment Check | Reference Markings / Dimensions / Lead / Terminal / Shape / Existing Part Photo |
| Quality Type | Aftermarket Replacement |
| Condition | New |
| Brand | YNF |
| Origin | China |
| MOQ | 1 Piece |
| Shipping Method | Air, Sea, Express |
| Payment Terms | T/T, PayPal, Western Union |
| Application | Description |
|---|---|
| Rotating Electrical Equipment | Used where compatible sliding electrical contacts are required |
| Electrical Motor Service | Suitable when the corresponding brush size and structure are matched |
| Brush Wear Replacement | Used when the original carbon contact becomes excessively worn |
| Electrical Overhaul | Can be replaced during complete motor or electrical-unit servicing |
| Preventive Maintenance | Brush wear can be inspected before contact performance deteriorates |
| Construction Machinery Repair | Suitable for compatible heavy-equipment electrical applications |
| Electrical Workshop | Practical for professional machinery electrical repair |
| B2B Parts Stocking | Suitable for wholesalers, dealers, and maintenance suppliers |
Q: What is YNF17700?
A: It is a carbon brush identified by the supplied 2428, 19A4, and TUK markings.
Q: What is the size reference?
A: The supplied size reference is 20-25-32.
Q: Is a specific machine model provided?
A: No. Fitment should be confirmed by dimensions, markings, terminal style, lead arrangement, and photos.
Q: Why are carbon brushes replaced?
A: They are wear components and can require replacement after the contact block becomes excessively worn or damaged.
YNF Machinery supplies 2428 19A4 TUK carbon brushes and related construction machinery electrical replacement parts for repair workshops, machinery dealers, wholesalers, and international importers.
The YNF17700 carbon brush carries a 20-25-32 size reference. Since carbon brushes are dimensional wear parts, accurate size and terminal matching should be prioritized before quantity purchasing.
Professional B2B buyers can provide the 2428 / 19A4 / TUK markings, required quantity, exact carbon block dimensions, lead length, terminal style, spring arrangement, and clear photos of the removed brush and brush holder for fitment confirmation.
Brush holders, solenoids, relays, switches, wiring components, controllers, and other electrical parts can also be consolidated into the same inquiry, helping wholesalers build broader maintenance stock while reducing fragmented shipment costs.
