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Anchors & Construction Fixings › Wedge & Through-Bolt Anchors

Top Type Breaker Valve Seat Through Bolt Design

Updated 2026-11-03 · Markdown version

Model no. Valve Seat Assembly 001

US$48.00 / piece

MOQ 50 pieces · Final price confirmed in your quote

Standard: ANSI, JIS, GB, GOST, DIN
Surface Treatment: Oxidation
Material: Cast Iron
Heat Treatment: Available
Packing: Export Wooden Case
Customization Service: OEM/ODM Service Available
Package Size: 120.00cm * 120.00cm * 120.00cm
OEM custom per drawing: OEM/ODM production according to customer drawings; flange diameter, bore size and lug structure are all customizable to meet different OEM assembly requirements..Forging refines grains and strengthens structure; optimized heat treatment fully enhances strength, toughness and hardness for heavy-duty and cyclic loading conditions.

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Specifications are as listed for this product. Engineering Hardware & Fasteners confirms ratings, mating parts, compatibility, packing and lead time with you before you order.

Specifications

Customization	Available
After-sales Service	Best
Warranty	Best
Model NO.	Valve Seat Assembly 001
Certification	CE, ISO 9001
Standard	ANSI, JIS, GB, GOST, DIN
Surface Treatment	Oxidation
Manufacturing Process	Forging
Material	Cast Iron
Processing Technology	Custom Casting + CNC Precision Machining
Heat Treatment	Available
Feature	High Precision, Tight Tolerance
Pressure Resistance	High Pressure Resistant
Wear Resistance	Excellent Wear Resistant
Quality Inspection	100% Dimensional Inspection
Packing	Export Wooden Case
Condition Style	New Hydraulic Breaker Components
Delivery Time	7-30 Working Days
Port of Shipment	Qigndao,China
Testing Method	Hydraulic Pressure Test
Product Name	Valve Seat Assembly
Customization Service	OEM/ODM Service Available
OEM Compatibility	Manufactured Strictly to OEM Drawings and Original
Transport Package	Wooden Case
Specification	Customized
Origin	China
HS Code	8481901000
Production Capacity	100000 /M
Package Size	120.00cm * 120.00cm * 120.00cm
Package Gross Weight	100.000kg
Lead Time	15 days (1 - 1000 Pieces) To be negotiated ( > 1000 Pieces)
Reinforced rib design	outer annular ribs increase shell rigidity and compressive strength, distribute stress concentration, extend bearing housing service life and ensure structural stability under heavy load..Metal flow lines distribute continuously along the part contour and align with loading direction, delivering dense, defect-free structure with superior load-bearing and fatigue performance.
OEM custom per drawing	OEM/ODM production according to customer drawings; flange diameter, bore size and lug structure are all customizable to meet different OEM assembly requirements..Forging refines grains and strengthens structure; optimized heat treatment fully enhances strength, toughness and hardness for heavy-duty and cyclic loading conditions.
High impact resistance	cast steel material combined with reinforced rib structure withstands high-frequency impact loads of hydraulic breakers, absorbing vibration and shock energy to prevent shell cracking and deformation.
Cast steel material	high-quality cast steel with excellent toughness and impact resistance, outperforming cast iron under heavy impact conditions, suitable for long-term operation in mining, crushing and excavation environments.
Solves common breaker faults	no hitting, weak power, irregular frequency
Category	Wedge & Through-Bolt Anchors

Technical parameters

1	Product Name	Top Type Breaker Valve Seat Through Bolt Design
2	Material	Alloy Steel 40Cr (Custom 42CrMo/20CrMnTi available)
3	Process	CNC Precision Machining + Quenching & Tempering + Precision Grinding
4	Surface Hardness	HRC 48-52 (on working face of cover)
5	Core Hardness	HB 280-320 (core)
6	Working Pressure	≤ 31.5 MPa (350 Bar)
7	Oil Temperature	-20℃ ~ +80℃
8	Sealing Type	O-ring static seal + metal face seal
9	Mounting Type	Flange type, 4-bolt fixing
10	Matching Clearance	Spool-to-bore clearance 0.005~0.012 mm
11	Surface Treatment	Black oxide / Zinc plated / Phosphating (optional)
12	Compatible Models	SB/GB/Furukawa/Toku/Konan series
13	Applicable Tonnes	Fit for 1~50 ton excavator breakers
14	Weight Range	0.5 kg ~ 15 kg (by model)
15	Machining Tolerance	IT6-IT7 grade
16	Concentricity	≤ 0.02 mm
17	Flatness	≤ 0.01 mm (flange sealing face)
18	Customization	OEM/ODM supported, drawing/sample based
19	Warranty	12 months
20	Packaging	Export plywood case / neutral carton + moisture bag

No.	Detail Part Advantage	Detail Description	Performance Advantage
1	Forged Steel Body & Vacuum Heat Treatment	Made of high-quality forged steel blank and strengthened by vacuum heat treatment, with high overall structural strength and uniform dense material.	Can withstand instantaneous high-pressure impact of the breaker system for a long time, resist cracking and deformation, ensure stable power output of hydraulic system and extend whole-machine service life.
2	Internal Hydraulic Flow Channel	Internal oil passages are precisely CNC-formed with smooth inner walls and transition, ensuring unobstructed oil flow without dead corners.	Effectively reduces oil-circuit pressure loss and power attenuation, gives full play to breaker striking capacity, improves overall working efficiency and avoids power drop during continuous impact.
3	Valve Core Chamber	The valve chamber adopts high-precision fine-boring processing, matching ground spool with precise fit clearance, ensuring smooth and anti-sticking movement.	Sensitive reversing response, steady and uniform impact frequency output, reduces working vibration and abnormal noise, and realizes precise striking rhythm control.
4	High-precision Seal Grooves	Seal grooves feature high machining accuracy and fine surface finish, with strict tolerance control on groove depth and width for tight fit with standard seals.	Maintains reliable sealing under continuous high pressure, prevents oil leakage, reduces equipment downtime, and lowers hydraulic oil consumption and maintenance cost.
5	Mounting Bolt Holes & Oil Ports	Strict tolerance and position control for mounting holes and oil ports, with regular chamfering at hole openings and high assembly accuracy.	Fits most mainstream rock breaker models directly without secondary machining. Easy disassembly and replacement save maintenance time and labor costs.
6	Full Pre-delivery Inspection	Each valve block undergoes multiple inspections including high-pressure test, leak detection and dimensional verification before delivery, with test data recorded per piece to eliminate defective products.	Qualified for continuous heavy-duty working conditions such as mining, demolition and construction with stable and reliable quality. OEM and small trial orders are supported, reducing customers' after-sales risk.

No.	Advantages
1	High-strength alloy steel, withstands high-pressure impact, fits 31.5MPa hydraulic system
2	5-axis CNC precision machining, IT6-IT7 tolerance, tight mating clearance
3	Quenched & tempered, surface HRC48-52, wear life extended 3x
4	Dual O-ring + metal face sealing, effectively prevents internal/external high-pressure oil leakage
5	Optimized oil window design, smooth hydraulic reversing, reduced power loss
6	Compatible with major breaker brands (Furukawa/Toku/Konan/SB/GB series)
7	Suitable for full range of 1~50 ton excavator breakers
8	OEM/ODM customization, drawing/sample based production per customer drawings
9	Factory direct supply, bulk export price, flexible MOQ
10	100% dimensional and hardness inspection before shipment, traceable quality
11	Solves common breaker faults: no hitting, weak power, irregular frequency
12	4-bolt flange mounting, easy to install and quick to repair
13	Black oxide / zinc plating / phosphating options for harsh working conditions
14	Precision ground bore, 0.005mm spool clearance, reduced internal leakage
15	Low-temp resistant -20℃, normal startup in cold mining sites
16	Withstands high-frequency impact, stable at 400-800 hits/min
17	Export-grade packaging, plywood case + moisture bag, damage-free long sea freight
18	12-month warranty, after-sales tech support, installation guidance available
19	Regular stock, mainstream models shipped in 3-7 days
20	Shipped from Qingdao port, full LCL/FCL containers, worldwide delivery
Note	Customzied Hydraulic Valve Block for Rock Breaker

No.	English Keywords / Category
1	Hydraulic Breaker Valve Cover
2	Breaker Spool Valve Seat
3	Hydraulic Hammer Control Valve Sleeve
4	Breaker Reversing Valve Assembly Parts
5	Excavator Breaker Valve Cover
6	Rock Hammer Valve Seat Assembly
7	Hydraulic Breaker Spare Parts
8	Breaker Wear Parts
9	Alloy Steel Valve Cover
10	40Cr Steel Valve Sleeve
11	CNC Machined Valve Body
12	Quenched and Tempered Valve
13	Precision Ground Valve Bore
14	High Pressure Hydraulic Valve Cover
15	Wear Resistant Reversing Valve Sleeve
16	Impact Resistant Valve Seat
17	O-ring Sealed Valve Cover
18	Flange Mounted Valve Cover
19	Oil Port Window Valve Sleeve
20	Breaker Piston Control Valve
21	Breaker Hammering Valve
22	Return Stroke Valve Seat
23	SB Series Breaker Valve Cover
24	GB Series Breaker Parts
25	Breaker Valve Parts
26	Furukawa Breaker Parts
27	Toku Breaker Valve Sleeve
28	Konan Breaker Valve Cover
29	Excavator Hydraulic Parts
30	Construction Machinery Parts
31	Mining Machinery Parts
32	Hydraulic System Valve Components
33	OEM Customized Valve Cover
34	ODM Drawing-based Valve Sleeve
35	Wholesale Breaker Spare Parts
36	Export Hydraulic Components
37	High Quality Breaker Valve Cover
38	Long Life Valve Seat
39	Leak-proof Valve Cover
40	Low Noise Reversing Valve Sleeve
41	High Pressure Cylinder Base
42	Steering Tie Rod Arm
43	Knuckle Ball Joint
44	Steering Chassis Parts
45	Forged Knuckle Arm
46	Truck Trailer Components
47	Custom Cast Tools & Hardware
48	Construction Machinery Cylinder End Cover
49	Engineering Machinery Connecting Housing

Description

Top Type Breaker Valve Seat Through Bolt Design is part of our wedge & through-bolt anchors range (Anchors & Construction Fixings).

Key details

Standard: ANSI, JIS, GB, GOST, DIN
Material: Cast Iron
Surface Treatment: Oxidation
Certification: CE, ISO 9001
Warranty: Best
Manufacturing Process: Forging
Processing Technology: Custom Casting + CNC Precision Machining
Heat Treatment: Available

Available configurations include standard, surface treatment, material, heat treatment and packing. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 50 pieces at US$48.00 per piece. Send one inquiry with the part number, quantity and destination, and Engineering Hardware & Fasteners confirms size, thread, material, grade, finish, price, lead time and shipping, checks the goods before dispatch and ships them to you.

Frequently asked questions

What is the minimum order quantity (MOQ) for Top Type Breaker Valve Seat Through Bolt Design?

The listed minimum order is 50 pieces, at US$48.00 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size.

What are the main specifications of Top Type Breaker Valve Seat Through Bolt Design?

Standard: ANSI, JIS, GB, GOST, DIN; Material: Cast Iron; Surface Treatment: Oxidation; Certification: CE, ISO 9001; Warranty: Best; Manufacturing Process: Forging. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include standard, surface treatment, material, heat treatment and packing. Size, thread, length, material and grade, surface finish, head marking, packaging and labels can be quoted to your specification or drawing.

What is the lead time and how is it shipped?

Lead time depends on quantity and customization and is confirmed in your quote. Engineering Hardware & Fasteners checks the goods before dispatch and ships by express, air or sea; mixed orders can be consolidated in one shipment.

Which other wedge & through-bolt anchors are available?

The Wedge & Through-Bolt Anchors category lists 1,201 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/anchors-construction-fixings/wedge-through-bolt-anchors/

How we work

Specified, checked and shipped by Engineering Hardware & Fasteners

Engineering Hardware & Fasteners supplies bolts, screws, nuts, washers, anchors, rivets and fastening hardware to equipment makers, contractors, distributors and maintenance teams. Orders go through one controlled process: size, thread, material, grade and finish confirmed, samples approved, dimensions, thread fit and plating checked before packing, then packed for export — standard or made to drawing.

DIN, ISO, ASTM, ANSI, JIS and GB standard parts
Non-standard parts made to your drawing
Dimensions, thread gauges and plating checked before packing
Export cartons and pallets, consolidated mixed orders
Samples available for approval before mass production

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