Hanwoo RHB330 Lower Bushing
Aftermarket lower bushing in OEM quality for the Hanwoo RHB330 hydraulic breaker, OEM part no B300-5004 (Ø224 x 170 mm). It centers the tool at the front head outlet, absorbs lateral loads and reduces wear on the tool and body. Precision-machined from wear-resistant, heat-treated steel. Bushing dimensions can differ even within the same model depending on production year and housing type, so compare them with your existing bushing before ordering.
Specifications:
OEM Part No: B300-5004
Outer Diameter (max.): 224 mm
Length: 170 mm
Weight: 26.25 kg
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Hanwoo RHB330 Hydraulic Breaker Lower Bushing
The Hanwoo RHB330 lower bushing is a critical wear part that centers and guides the tool where it exits the mouth of the front head. It is manufactured as an aftermarket replacement part for Hanwoo RHB330 hydraulic breakers. It replaces OEM part number B300-5004. It is precision-machined from wear-resistant, heat-treated steel.
TECHNICAL SPECIFICATIONS
| Compatible Brand | Hanwoo |
| Compatible Model | RHB330 |
| Part Type | Lower bushing |
| OEM Part No | B300-5004 |
| Outer Diameter (max.) | 224 mm |
| Length | 170 mm |
| Weight | 26.25 kg |
| Material | Wear-resistant, heat-treated steel |
Before ordering, compare the dimensions of your existing part with these values.
Important: design differences by model and production year
Bushing designs vary by brand and model, and even by the production year of the same model and by whether the breaker is a silenced (box type) or tunnel type unit. Two breakers with the same model name can use bushings of different size and shape.
If you send the technical drawing of your part to sales@hkm.com.tr, we can manufacture it to your drawing.
FEATURES
- Wear-resistant, heat-treated steel
- Precise bore for accurate tool guidance
- Made to OEM dimensions for easy service
- Long-lasting surface quality
- Produced with bore tolerance, hardness and surface quality control
WHAT DOES A LOWER BUSHING DO?
It centers the tool at the front head outlet, absorbs lateral loads and reduces wear on the tool and body. The right bore keeps tool play and lateral loads under control.
Other names used for this part include lower tool bushing, front bush and wear bush.
INSTALLATION AND MAINTENANCE NOTES
- Check the tool's lateral play regularly; increasing play is the first sign of bushing wear.
- If the play exceeds the wear limit in your manual, replace the bushing and the seal kit together; replacing only the seal is a temporary fix.
Detailed guide: Bushing wear: why seal replacement alone fails
WHAT IS INCLUDED?
Quantity: 1 lower bushing. If you also need a seal kit, contact our sales team.
Frequently Asked Questions
Q: What is the OEM part number of this part?
A: OEM part number: B300-5004. You can compare it with the number in your breaker's parts catalog or on the removed part. If your number is different, contact us and we will check for an equivalent.
Q: Does this lower bushing fit my Hanwoo RHB330 breaker?
A: It is manufactured for the Hanwoo RHB330. The same model may have been built with different designs in different production years or housing types, so please compare the outer diameter and length with your existing bushing and check the OEM part number (B300-5004) against your breaker's parts catalog before ordering.
Q: When should the lower bushing be replaced?
A: When the tool's lateral play exceeds the wear limit in your breaker's manual. If the breaker leaks oil at the tool end, measure the play first: above the limit, replace the bushing and the seal kit together; below the limit, replacing only the seal kit is enough. The limit depends on the model, so check your manual or send us the model code.
Q: What other names are used for the lower bushing?
A: Other names used for this part include lower tool bushing, front bush and wear bush.
Q: What if the part in my breaker does not match these dimensions?
A: Send the dimensions or the technical drawing of your current part to sales@hkm.com.tr. We will identify the right part with you and, if needed, manufacture it to your drawing.
Q: Is shipping included in the price?
A: No, shipping is not included in our prices. Please contact our sales team for the best delivery option to your location.
Not sure which bushing fits?
Send us your breaker's brand and model, the OEM part number if you have it, the dimensions of your current part or its technical drawing, and we will prepare the matching part and a quote. We can manufacture to your drawing. We ship spare parts to more than 70 countries.
Hanwoo and the model names shown are trademarks of their respective owners and are used only to indicate compatibility. OEM part numbers are given for reference only.
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