About Crown Engineers - Bearing Supplier in India

India‑based Crown Engineers lists 13 active products that cover bearings, industrial filters, fasteners, washers, chemicals and graphite‑related items. The catalogue includes dry bushes & washers, sintered bronze (self‑lubricating) components, various bronze‑based bushes, half‑shell bearings and a sintered bronze filter. Several entries specify HS‑code families such as 2804.70 for elemental phosphorus, 7407.21 for aluminium‑bronze alloy C63000, 8483.30 for steel‑backed copper alloy bushes, 7403.29 for high‑tensile manganese bronze, 8482.80 for sintered bronze bearings and 8483.40.30 for gun‑metal or phosphor‑bronze bushes.

The product descriptions also note material compositions, for example aluminium‑bronze alloy (Cu 77‑83 %, Al 9.5‑11 %, Fe 2‑4 %, Ni 3‑5 %, Mn ≤1.5 %), steel backing with copper‑tin or copper‑zinc liners, and bronze‑graphite composites used in oilless bushes. Half‑shell bearings and sintered bronze bearings are listed without explicit HS codes, but they fall under the broader HS chapter 84 for bearings and parts. The mix of metal alloys and graphite‑filled grades reflects typical engineering‑mechanical applications that require wear resistance and self‑lubrication.

Product Range and Specialties of Crown Engineers

Crown Engineers’ catalogue contains bronze‑based bushes in aluminium‑bronze (C63000), manganese‑bronze, gun‑metal and phosphor‑bronze alloys, each commonly supplied in standard dimensions such as Ø 10 - 100 mm and thicknesses of 2 - 10 mm. In the bearing sector, sintered bronze bearings (CuSn10) are typically produced to ISO 281 dimensional tolerances (P5‑P6) and hardness around 55 - 65 HRB, while half‑shell bearings follow ISO 7525 load‑capacity classifications. Graphite‑filled bronze bushes often meet ASTM B20 specifications for copper‑based alloys with graphite content of 10‑30 wt % to achieve self‑lubricating performance. Industrial filters made from sintered bronze are usually rated for filtration efficiencies of 95 % at 10 µm particle size and can be supplied in 20‑ft containers with protective crating.

Trade and Export Information - Crown Engineers

India is a major exporter of bearing components and bronze alloys, with shipments frequently directed to automotive manufacturers in Europe, heavy‑equipment makers in the Middle East and machinery assemblers in Southeast Asia. The HS‑code families present in Crown Engineers’ list (e.g., 7407, 8483, 8482) are subject to standard customs documentation such as a commercial invoice, packing list and, where required, a certificate of origin under the Indian‑EU Generalised System of Preferences. Buyers typically request ISO 9001 quality‑management certification, ISO 14001 environmental compliance and, for EU markets, CE marking or conformity to EN 60204 safety standards. Packaging for bushes and bearings commonly uses wooden crates with internal foam or corrugated inserts, loaded in 20‑ft or 40‑ft containers; FOB or CIF terms are standard practice for Indian exporters.

Sourcing from Crown Engineers - Buyer Guidance

When sourcing from Crown Engineers, buyers should obtain material test reports referencing ASTM B20 (for copper alloys) or ISO 9001‑based inspection certificates to verify alloy composition and hardness. Request dimensional drawings that state tolerance class (e.g., P5 for bearings) and surface finish (Ra ≤ 0.8 µm for precision bushes). Samples of sintered bronze filters should be accompanied by filtration efficiency data and porosity measurements. Verify that any graphite‑filled products meet the typical 10‑30 % graphite content and that the bronze‑graphite composite complies with UL 94V‑0 fire‑rating when required. Confirm minimum order quantities, which for custom‑alloy bushes often start at 500 pcs, and negotiate lead times that range from 4 weeks for standard sizes to 8‑12 weeks for specialty alloys.

What bearing and bush product families does Crown Engineers list?

The catalogue includes dry bushes & washers, sintered bronze (self‑lubricating) bushes, aluminium‑bronze (C63000) bushes, bi‑metal steel‑backed copper alloy bushes, half‑shell bearings, sintered bronze bearings, iron sintered self‑lubricated bushes, gun‑metal/phosphor‑bronze bushes, and graphite‑filled bronze bushes.

Which HS codes are associated with the listed products?

HS 2804.70 is used for elemental phosphorus, 7407.21 for aluminium‑bronze alloy C63000 bushes, 8483.30 for steel‑backed copper alloy bushes and oilless bronze‑graphite bushes, 7403.29 for high‑tensile manganese bronze bushes, 8482.80 for sintered bronze bearings, and 8483.40.30 for gun‑metal and phosphor‑bronze bushes.

What material standards apply to the bronze alloys offered?

Typical standards include ASTM B20 for copper‑based alloys and ISO 6892 for tensile testing; aluminium‑bronze C63000 must contain Cu 77‑83 %, Al 9.5‑11 %, Fe 2‑4 %, Ni 3‑5 % and Mn ≤ 1.5 % as specified in the product description.

Which certifications should a buyer request from Crown Engineers?

Buyers should request ISO 9001 quality‑management certification, ISO 14001 environmental compliance, and, for EU shipments, CE marking or relevant EN safety certifications. Specific material test reports (ASTM or ISO) should also be obtained.

What are typical packaging and shipping methods for these products?

Products are usually packed in wooden crates with internal foam or corrugated inserts, loaded in 20‑ft or 40‑ft containers. Common Incoterms are FOB or CIF from Indian ports such as Mumbai or Chennai.

What are common minimum order quantities and lead times?

Standard bushes often have a MOQ of 500 pieces, while custom alloy sizes may require 1 000 pieces. Lead times range from four weeks for off‑the‑shelf items to eight‑to‑twelve weeks for custom compositions or large‑volume orders.

How can a buyer verify the performance of graphite‑filled bronze bushes?

Request a material test report showing graphite content (typically 10‑30 wt %) and hardness values (around 55‑65 HRB). Additional verification can include wear‑rate testing under ISO 281 load conditions.

Are there any specific regulatory requirements for exporting the listed chemicals?

The phosphorus product (HS 2804.70) is subject to Indian export controls and may require a hazardous‑materials declaration, safety data sheet (SDS) and compliance with the International Maritime Dangerous Goods (IMDG) code.