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Sandvik / Tamrock
550 996 42h Cylinder Assembly
DD321-40
Available — Request Quote| Part Number | 550 996 42h |
| Description | Cylinder Assembly |
| Brand | Sandvik (Tamrock) |
| Assembly | Boom Assembly |
| Type | Drill Rig Spare Part |
Quick answer
550 996 42h (also written 55099642h or 550-996-42h) is a Sandvik cylinder assembly spare part used in the Boom Assembly assembly of the Sandvik DD321-40. Verified compatible with 3 Sandvik machine models including DD321-40, DD321-40C, DT621. Available as an aftermarket replacement drill part from BK Drilling — Turkey-based Sandvik and Epiroc spare parts supplier serving mining contractors worldwide. Quote on request via WhatsApp; typical lead time 3-7 days for stock items.
Part code alternate forms: 55099642h, 550 996 42h, 550-996-42h.
Compatible machines
3
OEM cross-reference
550 996 42h
About Sandvik 550 996 42h Cylinder Assembly
This hydraulic cylinder is a core actuator component in the Sandvik DD321-40, operating within the Boom Assembly. It converts hydraulic fluid pressure into linear mechanical force for positioning, clamping, or feed operations essential to the drilling process.
This is an OEM-compatible aftermarket replacement part for the Sandvik DD321-40 (DD321-40). Also compatible with Tamrock branded equipment of the same model series. BK Drilling supplies this part with fast worldwide shipping and competitive pricing.
Frequently asked questions
When should a hydraulic cylinder be rebuilt or replaced?
Rebuild or replace when you observe fluid leakage past seals, reduced force output, sluggish or inconsistent movement, visible scoring on the cylinder rod, or when the machine cannot maintain required feed pressure during drilling.