A slide bar (also called a guide strip or feed beam liner) is a precision-machined steel component that lines the feed beam channel of a rock drilling machine. It guides the drill drifter (rock drill unit) in precise linear motion during drilling, collaring, and retraction.
Part 55017281 is the OEM-specified replacement for:
Often used alongside the Sandvik 20891908 Sandvik Rock Drill Slide Bar, which serves the same function on Sandvik Rock Drilling Machines.
Further reading: Sandvik — rock drilling — mining.
All specifications reflect Sandvik OEM data produced under ISO 9001:2015 quality management.
| Part Number | 55017281 |
|---|---|
| Brand | Sandvik / Tamrock |
| Part Type | Feed Rail / Guide Component |
| Material | High-grade steel alloy |
| Function | Feed beam alignment and linear guidance |
| Application | Surface and underground drill rigs |
| Surface | Precision machined |
| Certification | ISO 9001:2015 |
Aftermarket alternatives frequently deviate from OEM durometer, compound formulation, and dimensional tolerances — causing premature failure. Babacan Kaucuk supplies only ISO 9001:2015-certified OEM-quality parts.
How do I know when slide bars need replacement?
Replace when drill alignment wanders, when feed rate control becomes imprecise, or when visible wear grooves exceed 1 mm depth.
What causes premature slide bar wear?
The primary cause is contaminated lubrication — rock dust mixed with grease becomes an abrasive paste. The second cause is incorrect grease type or insufficient grease quantity.
Can slide bars be reused after reconditioning?
Minor surface scratches can be polished out. Deep grooves, deformation, or corrosion penetration require replacement.
Are stainless and steel slide bars interchangeable?
Dimensionally yes in most cases, but stainless grades offer superior corrosion resistance for underground wet environments. Always match the OEM specification.
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Feed beam slide bars for Sandvik rock drilling equipment are precision-machined from tool steel (typically 1.2379 / D2 grade or equivalent) hardened to HRC 58–62 for wear resistance against rock-dust-contaminated lubrication. In aggressive underground environments, stainless steel grades (316L or similar) are specified for corrosion resistance, accepting a slight reduction in surface hardness in exchange for chemical stability in wet, acid-generating rock environments.
Surface finish is critical to lubrication film formation and stick-slip prevention: ground surfaces at Ra 0.4–0.8 μm maintain adequate oil film thickness between bar and channel. Dimensional tolerances of h6 (ISO 286) on bar width ensure correct fit within the feed beam channel with sufficient clearance for lubrication film without excessive lateral play. Deviations from this tolerance cause uneven drifter guidance, steering drift during drilling, and accelerated asymmetric wear on one bar face.
Lubrication compatibility must be verified against the Sandvik specification for your machine. Rock dust-contaminated grease becomes an abrasive compound that accelerates both slide bar and feed beam channel wear simultaneously. Automated centralised lubrication systems that deliver small, frequent grease doses outperform manual greasing intervals, maintaining consistent film thickness and diluting contamination before it concentrates.
Feed beam slide bars should be inspected at every drill steel change and at each shift handover. Measure bar thickness at the primary wear surfaces using a micrometer; acceptable wear limit is typically 0.5–1.0 mm below the new bar dimension (refer to the Sandvik service manual for your specific feed beam model).
Replacement interval varies by rock hardness, drill pattern density, and lubrication quality. Soft rock with adequate lubrication: 1,500–3,000 drill metres. Hard abrasive rock or poor lubrication: 500–1,000 drill metres. Poor lubrication is the dominant factor in premature wear — audit lubrication system flow rate and contamination level if bars wear faster than the site benchmark.
Part number 55017281 is the Sandvik OEM designation and primary search identifier for this component. In Sandvik parts catalogs it may also appear as 55017281 (condensed form without hyphens) or under a supersession number in more recent catalog editions. A supersession number indicates a revised or improved replacement — both numbers refer to the same installation position and either can be ordered.
Cross-referencing from aftermarket catalogs requires caution: generic catalogs match by application but do not guarantee dimensional compliance, rubber durometer, or material compound equivalence. A part that fits physically may still deviate from OEM spring rate, temperature rating, or fatigue life specification. For confirmed cross-reference support with your specific machine serial number, contact our parts team — we maintain Sandvik parts databases for all major model families.
What is the correct lubrication interval for feed beam slide bars?
Lubricate every 2–4 drill rod connections or every 15–30 minutes of active drilling, per Sandvik recommendations for your model. In wet underground environments reduce the interval — drilling water washes grease from bearing surfaces, increasing the contamination concentration faster.
Why do slide bars wear faster on one side?
Asymmetric wear indicates feed beam misalignment relative to the drill pattern, incorrect drifter mounting geometry, or uneven bar installation. Investigate and correct the root cause before installing new bars — the new bars will develop identical asymmetric wear if the misalignment is not addressed.
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