This valve spool is a precise hydraulic control spare part for hydraulic rock drifter and mining drilling rig. Manufactured from high-quality alloy steel with strict quenching and tempering heat treatment and precision grinding processing. It features high surface hardness, excellent wear resistance, low friction and stable dimensional accuracy, ensuring sensitive and reliable hydraulic flow control under continuous high-pressure working conditions.
Tight manufacturing tolerances guarantee good matching with valve housing. It maintains stable impact frequency of rock drill, effectively avoids hydraulic leakage, reduces equipment failure and extends the service life of the hydraulic system. It is an ideal aftermarket replacement spare part.
We supply complete series rock drill spare parts. Bulk order and customized service are available.
| Ring Bush |
Thrust Bush |
Upper Bush |
Front Cover |
Tool Bush |
| Buffer Seal |
Dust Seal |
U-Packing |
Back-up ring |
Side Bolt |
| Rod Moil Point |
Chisel |
Washer |
Through Bolt |
Side Rod |
| Air Check Valve |
Valve Adjuster |
Accumulator |
Accumulator Body |
Accumulator Cover |
| Front Head |
Grease Nipple |
Rod Pin |
Stop Pin |
Rubber Plug |
| Charging V/V |
Diaphragm |
Seal Kit |
O-Ring Seal |
Gas Seal |
| Socket Plug |
Piston |
Adapter |
Valve |
Valve Plug |
| Down Cushion |
Tool Set |
N2 Gas Charging Set |
N2 Gas Cylinder |
B-3way valve assy |
| Seal Retainer |
Valve Sleeve |
Front Head Pin |
Lower Bush |
Hex Nut |
| Socket Bolt |
Step Seal |
Upper Cushion |
Rubber Pad |
Shock Absorber |
About AS
Guangzhou Huilian Machinery Equipment Co., Ltd
Guangzhou Huilian Machinery Equipment Co., Ltd is a specialist manufacturer of excavator attachments, with over 17 years of focus and experience in the industry. Our core product portfolio includes hydraulic hammers, breaker parts, quick couplers, rippers, hydraulic shears, earth augers, grabs, orange peel grapples, power thumbs, and buckets.
Hydraulic breakers are our flagship product. Guided by the philosophy "Quality Changes the Future", we prioritize R&D, precision manufacturing, and customer service for our high-end breaker series.
As a national high-tech enterprise, we lead the industry through smart manufacturing and continuous innovation. We have solved key technical bottlenecks in heavy-duty breaker technology, with our HL40-HL210 series suitable for excavators from 0.5 to 100 tons.
Drawing on 17 years of expertise, we also produce high-quality OEM breaker parts for nearly all major brands, including Atlas Copco, Komatsu, Furukawa, Montabert, Indeco, NPK, JCB, and Rammer. Our factory maintains mature technical databases and precise drawings, ensuring reliable, compatible components such as seal kits, pistons, diaphragms, cylinders, front/back heads, chisels, accumulators, bushings, through bolts, valve sleeves, and charging kits-all built to match original performance standards.
Partner with us for precision, durability, and cost-effective solutions that minimize equipment downtime. We are your one-stop provider of reliable aftermarket excavator attachments.
F & Q
Q1: When can I get the price?
A1: Usually, we provide a quotation within 24 hours after your inquiry.
Q2: Are you able to manufacturing products according to customer's design?
A2: Sure, we have made many special orders from oversea for 17 years since 2009. So we have enough ability to deal with any cases. OEM certifi is available to provided.
Q3: What's your advantages in the machinery manufacturing industry?
A3: Fast delivery time, High quality products, Best customer service, Adopting the latest production technology.
Q4: Which countries have you been exported recently?
A4: Canada, Australia, Peru, Egypt, Brazil, Mexico, South Africa, etc.
Q5: Are you sure that your product will fit my hydraulic breaker?
A5: We have different brand hydraulic breaker parts. Show me your model number, and we can give you best match products.
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