Rail Heightening Pad

Rail Heightening Pads are employed in rail fastening systems to correct vertical track geometry. Inserted between the rail base and the underlying support structure, these Rail Heightening Pads provide incremental height adjustments that restore the line's horizontal reference plane to design tolerance.

Manufactured from high-density polyethylene (HDPE) via injection or extrusion molding, the material offers a balance of compressive strength and dimensional stability under sustained track loading. Surface hardness exceeds 40 Shore D, ensuring adequate resistance to indentation and creep during service life. Shims are available in a range of thickness increments to accommodate site-specific lift requirements, facilitating rapid and precise leveling adjustments during both initial installation and ongoing track maintenance operations.

product details

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Technical Specifications

No.	Image	Name	Dawing No.	Dimensions(mm)
1		Rail Heightening Pad type I	104-05	170×148	h=2
					h=3
					h=5
					h=10
2		Rail Heightening Pad type II	60K02-08	467×170	h=1
					h=2
					h=3
					h=4
					h=5
3		Rail Heightening Pad	TGK01-06	330×170	h=1
					h=1.5
					h=2
					h=3
					h=5
					h=10
4		Rail base slope pad	BJ9-03-01-01-SS-GD-006	420×170	h=8
					h=11
					h=13.5
5		Plastic Rail Heightening Pad	224-4-19	590×200×5
6		Plastic Rail Heightening Pad	4171-55	464×190×5
7		Plastic Rail Heightening Pad	YBJ-GD005(217)-04	769×230×5
8		Plastic Rail Heightening Pad	Special route 4171-56	661×190×5

Production Capacity & Quality Assurance

Our injection molding division is equipped and staffed for sustained high-volume output, with verified machine counts and real production figures—no estimates, no approximations.

Workshop / Line	Equipment	Annual Output
Injection Molding Workshop	22 injection molding machines	15,000,000 pieces (nylon & polyester components)
Compression Molding Workshop	5 compression presses	Included in above
Auxiliary Equipment	20 supporting units	—

Product Portfolio – Track Adjustment & Protection

Category	Typical Products Covered
Rail Heightening & Adjustment	Rail Heightening Pad, Rail Heightening Pad HDPE Material, Rail Heightening Pad for Concrete Sleeper, Rail Adjustment Pad for Rail Height Fine Tuning, Rail Adjustment Pad Polyamide Material, Rail Adjustment Pad EN ISO TB Standard
Rail Power Supply Protection	100,000 sets annually
Vibration & Noise Damping	500,000 sets annually
Fastening & Transit Protection Systems	Insulated rail gauge blocks, fastener components, transit protection assemblies

CNAS-Accredited In-House Testing Center

Raw material control: Every incoming batch is lab-tested before being accepted into the factory. Production only begins once the batch meets our specified property requirements.

In-process quality checks: Sampling inspections are performed at three stages – pre-production, in-process, and post-completion.

In-house testing capability: All tests are conducted in our own laboratory, which holds CNAS accreditation. This means our test results are recognized under international standards.

Lead time: 7 to 30 days, not including design or mold development.

Capacity Verification

The equipment roster and output figures stated above reflect actual operating capacity—not theoretical maxima. This infrastructure supports bulk order fulfillment and compressed delivery schedules without relying on subcontracting or overtime contingency.

Custom Engineering for Rail Heightening Pad

Application-Specific Design Support

For lines with demanding vibration and noise control requirements, our engineering team offers direct consultation. The group comprises over 30 specialists, each with three decades or more of hands-on involvement in rail-borne vibration mitigation and acoustic attenuation. This depth of expertise enables us to formulate pad geometries, compound selections, and stiffness profiles that respond directly to your track environment and loading patterns.

In-House Tooling Manufacture

Where custom geometry or performance specifications are required, our internal mold fabrication workshop provides a significant operational advantage. With an annual tooling output exceeding 300 units, the facility is equipped and staffed specifically to support rapid development cycles for tailored elastic rail pads and resilient rail pads.

Control over Quality and Timeline

Managing mold production in-house ensures full oversight of dimensional precision, surface finish, and functional integrity. It also eliminates the scheduling uncertainties and coordination overhead typically associated with third-party toolmakers. This integrated approach preserves additional lead-time margin during the project initiation phase, resulting in a more predictable delivery schedule and reduced early-stage risk exposure.