Sandvik / Tamrock
551 681 56b Cylinder, Hydraulic
DD421-60C
| Part Number | 551 681 56b |
| Description | Cylinder, Hydraulic |
| Brand | Sandvik (Tamrock) |
| Assembly | Jack Beam Assembly |
| Type | Drill Rig Spare Part |
Quick answer
551 681 56b (also written 55168156b, 551-681-56b, or 551.681.56b) is a Sandvik cylinder, hydraulic spare part used in the Jack Beam Assembly assembly of the Sandvik DD421-60C. Verified compatible with 2 Sandvik machine models including DD421-60, DD421-60C. 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: 55168156b, 551 681 56b, 551-681-56b.
Compatible machines
2
OEM cross-reference
551 681 56b
About Sandvik 551 681 56b Cylinder, Hydraulic
Engineered for the Sandvik DD421-60C, this cylinder is part of the Jack Beam Assembly and provides precise hydraulic actuation under the heavy loads and harsh conditions of mining operations. Cylinder rebuild or replacement restores full force output and positional accuracy.
This is an OEM-compatible aftermarket replacement part for the Sandvik DD421-60C (DD421-60C). 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.
