Krupp AT20 One-Piece Bushing (Lower + Thrust + Upper)
Aftermarket one-piece bushing in OEM quality for the Krupp AT20 hydraulic breaker, OEM part no 121110009 (Ø64.98 x 135 mm). This bushing is a single piece that includes the lower bushing, thrust bushing and upper bushing in one part. It is used in breakers that combine the lower, thrust and upper bushing functions in one part instead of three separate bushings. 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:
Consists of: Lower bushing + Thrust bushing + Upper bushing
OEM Part No: 121110009
Outer Diameter (max.): 64.98 mm
Length: 135 mm
Weight: 1.83 kg
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Krupp AT20 Hydraulic Breaker One-Piece Bushing (Lower + Thrust + Upper)
The Krupp AT20 one-piece bushing is a single part that takes on the lower, thrust and upper bushing functions in breakers without three separate bushings, and guides the tool inside the front head. It is manufactured as an aftermarket replacement part for Krupp AT20 hydraulic breakers. It replaces OEM part number 121110009. It is precision-machined from wear-resistant, heat-treated steel.
This bushing is a single piece that includes the lower bushing, thrust bushing and upper bushing in one part.
TECHNICAL SPECIFICATIONS
| Compatible Brand | Krupp |
| Compatible Model | AT20 |
| Part Type | One-piece bushing |
| Consists of | Lower bushing + Thrust bushing + Upper bushing |
| OEM Part No | 121110009 |
| Outer Diameter (max.) | 64.98 mm |
| Length | 135 mm |
| Weight | 1.83 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.
WHICH BUSHINGS DOES THIS PART INCLUDE?
- Lower bushing
- Thrust bushing
- Upper bushing
FEATURES
- Combines the lower, thrust and upper bushing functions in one piece
- Wear-resistant, heat-treated steel
- Precise bore for accurate tool guidance
- Made to OEM dimensions
- Produced with bore tolerance, hardness and surface quality control
WHAT DOES A ONE-PIECE BUSHING DO?
It is used in breakers that combine the lower, thrust and upper bushing functions in one part instead of three separate bushings. It centers and guides the tool and absorbs axial and lateral loads to reduce wear on the tool and body.
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 one-piece bushing (includes the lower, thrust and upper bushing in one part). 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: 121110009. 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 one-piece bushing fit my Krupp AT20 breaker?
A: It is manufactured for the Krupp AT20. 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 (121110009) against your breaker's parts catalog before ordering.
Q: Which bushings does this one-piece bushing include?
A: This bushing is a single piece that includes the lower bushing, thrust bushing and upper bushing, so you do not need to order these three bushings separately. Compare the dimensions with your existing part.
Q: When should the one-piece 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 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.
Krupp 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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