{"id":662,"date":"2026-01-13T07:39:23","date_gmt":"2026-01-13T07:39:23","guid":{"rendered":"https:\/\/roller-chain-manufacturers.com\/?post_type=product&p=662"},"modified":"2026-08-26T09:41:41","modified_gmt":"2026-08-26T09:41:41","slug":"correntes-de-estacionamento-16alt","status":"publish","type":"product","link":"https:\/\/roller-chain-manufacturers.com\/pt\/produto\/correntes-de-estacionamento-16alt\/","title":{"rendered":"Correntes de estacionamento 16ALT 20ALT 24ALT"},"content":{"rendered":"
\n
<\/div>\n

Roller Chain Manufacturers \u2014 ALT Series<\/p>\n

Redes de estacionamento
\n16ALT \u00a0\u00b7\u00a0 20ALT \u00a0\u00b7\u00a0 24ALT<\/span><\/h2>\n

Heavy-duty double-row roller chains engineered for vehicle access control. Three pitch series, up to triplex strand, tensile strength 71.55 kN \u2013 323.55 kN. Indoor and outdoor rated.<\/p>\n

<\/p>\n

\n
\n
10<\/div>\n
Models Available<\/div>\n<\/div>\n
\n
323 kN<\/div>\n
Max Tensile Strength<\/div>\n<\/div>\n
\n
20 m<\/div>\n
Max Span Coverage<\/div>\n<\/div>\n
\n
M20\u2013M30<\/div>\n
Bolt Types<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\"Correntes<\/div>\n

<\/p>\n

Car parking chains are purpose-built safety barriers designed to secure vehicles in designated spaces, control access points, and define safe zones within parking facilities. Unlike swing-arm booms or fixed bollards, roller-chain barriers adapt to any span width, deliver measurable tensile resistance, and withstand outdoor exposure without structural compromise.<\/p>\n

The ALT series covers three pitch sizes \u2014 16ALT (25.40 mm pitch), 20ALT (31.75 mm pitch), and 24ALT (38.10 mm pitch) \u2014 each available in simplex (-1), duplex (-2), and where specified, triplex (-3) strand configurations. This gives procurement engineers a scalable load path: match the pitch to the structural requirements of the drive mechanism, then scale strand count to the required tensile strength.<\/p>\n

<\/p>\n

\n

Quick Reference<\/p>\n

How to Read the ALT Series Code<\/p>\n

The prefix number is the pitch in sixteenths of an inch<\/strong>: 16 = 1\u2033 (25.40 mm) \u00a0\u00b7\u00a0 20 = 1\u00bc\u2033 (31.75 mm) \u00a0\u00b7\u00a0 24 = 1\u00bd\u2033 (38.10 mm). The suffix -1 \/ -2 \/ -3<\/strong> is the strand count. A duplex chain of the same pitch approximately doubles both pin length and rated tensile strength versus the simplex variant \u2014 strand count is the primary lever for scaling load capacity without changing pitch.<\/p>\n<\/div>\n

<\/p>\n

Full Specification Data<\/p>\n

Especifica\u00e7\u00f5es das Correntes de Estacionamento<\/h2>\n
\n\n\n\n<\/p>\n\n\n\n\n\n\n\n\n\n\n
N\u00famero da corrente<\/th>\nAltura P
\n(mm)<\/span><\/th>\n		Roller Dia.
\nd\u2081 max (mm)<\/th>\n		Largura interna
\nb\u2081 min (mm)<\/th>\n		Pin Dia.
\nd\u2082 max (mm)<\/th>\n		Comprimento do pino
\nL max (mm)<\/th>\n		Comprimento do pino
\nLc max (mm)<\/th>\n		Plate Depth
\nh\u2082 max (mm)<\/th>\n		Plate Thick.
\nT max (mm)<\/th>\n		Bolt
\nTipo<\/th>\n		UTS Q min
\n(kN)<\/th>\n		Avg. Tensile
\nQ\u2080 (kN)<\/th>\n		Peso
\n(kg\/m)<\/th>\n<\/tr>\n<\/thead>\n
16ALT Series \u2014 Pitch 25.40 mm \u00a0\u00b7\u00a0 1\u2033 \u00a0\u00b7\u00a0 Bolt M20<\/td>\n<\/tr>\n
16ALT-1<\/td>\n25.40<\/td>\n15.88<\/td>\n15.75<\/td>\n7.92<\/td>\n32.7<\/td>\n36.5<\/td>\n24.0<\/td>\n3.25<\/td>\nM20<\/td>\n71.55<\/td>\n81.8<\/td>\n2.60<\/td>\n<\/tr>\n
16ALT-2<\/td>\n25.40<\/td>\n15.88<\/td>\n15.75<\/td>\n7.92<\/td>\n62.7<\/td>\n65.8<\/td>\n24.0<\/td>\n3.25<\/td>\nM20<\/td>\n143.10<\/td>\n166.3<\/td>\n5.15<\/td>\n<\/tr>\n

<\/p>\n

20ALT Series \u2014 Pitch 31.75 mm \u00a0\u00b7\u00a0 1\u00bc\u2033 \u00a0\u00b7\u00a0 Bolt M24<\/td>\n<\/tr>\n
20ALT-1<\/td>\n31.75<\/td>\n19.05<\/td>\n18.90<\/td>\n9.53<\/td>\n40.4<\/td>\n44.7<\/td>\n30.0<\/td>\n4.00<\/td>\nM24<\/td>\n107.85<\/td>\n118.6<\/td>\n3.91<\/td>\n<\/tr>\n
20ALT-2<\/td>\n31.75<\/td>\n19.05<\/td>\n18.90<\/td>\n9.53<\/td>\n76.4<\/td>\n80.5<\/td>\n30.0<\/td>\n4.00<\/td>\nM24<\/td>\n215.70<\/td>\n234.4<\/td>\n7.80<\/td>\n<\/tr>\n
20ALT-3<\/td>\n31.75<\/td>\n19.05<\/td>\n18.90<\/td>\n9.53<\/td>\n112.2<\/td>\n116.3<\/td>\n30.0<\/td>\n4.00<\/td>\nM24<\/td>\n323.55<\/td>\n351.6<\/td>\n11.77<\/td>\n<\/tr>\n

<\/p>\n

24ALT Series \u2014 Pitch 38.10 mm \u00a0\u00b7\u00a0 1\u00bd\u2033 \u00a0\u00b7\u00a0 Bolt M30<\/td>\n<\/tr>\n
24ALT-1<\/td>\n38.10<\/td>\n22.23<\/td>\n25.22<\/td>\n11.10<\/td>\n50.3<\/td>\n54.3<\/td>\n35.7<\/td>\n4.80<\/td>\nM30<\/td>\n149.20<\/td>\n161.1<\/td>\n5.62<\/td>\n<\/tr>\n
24ALT-2<\/td>\n38.10<\/td>\n22.23<\/td>\n25.22<\/td>\n11.10<\/td>\n95.8<\/td>\n99.7<\/td>\n35.7<\/td>\n4.80<\/td>\nM30<\/td>\n298.40<\/td>\n322.2<\/td>\n11.70<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* UTS values in kN. Suffix -1 = simplex, -2 = duplex, -3 = triplex. All dimensions in mm.<\/p>\n

<\/p>\n

Why ALT Series<\/p>\n

Benef\u00edcios de usar correntes de estacionamento<\/h2>\n
\n
\n
\ud83d\udd34<\/div>\n

High Visibility & Deterrence<\/p>\n

Available in high-visibility red\/white powder-coat alternating segments. Optional flashing LED attachments provide night visibility without additional wiring infrastructure. Clear access boundary communication at a glance.<\/p>\n<\/div>\n

\n
\ud83d\udccf<\/div>\n

Flexible Span \u2014 Up to 20 m<\/p>\n

Unlike fixed-width booms, ALT chains cover entrances up to 20 metres wide by linking additional sections. The M20 \/ M24 \/ M30 bolt connection allows on-site length adjustment without specialist tools.<\/p>\n<\/div>\n

\n
\ud83d\udd07<\/div>\n

Low-Noise Operation<\/p>\n

Motor-driven chain barrier systems generate significantly less noise than pneumatic bollards or counterweighted boom gates \u2014 critical for residential car parks and noise-sensitive facilities.<\/p>\n<\/div>\n

\n
\ud83d\udd0b<\/div>\n

Battery Backup Ready<\/p>\n

Motorized chain barrier systems built around ALT chains typically support backup battery modules for continued operation during mains power interruptions \u2014 a regulatory requirement in many commercial parking codes.<\/p>\n<\/div>\n

\n
\u2699\ufe0f<\/div>\n

Long Service Life<\/p>\n

Carbon steel construction with precision-ground rollers and hardened pins resists wear even in outdoor installations exposed to road grit and temperature cycling. Individual link replacement avoids full-run discard.<\/p>\n<\/div>\n

\n
\ud83c\udf27\ufe0f<\/div>\n

Indoor & Outdoor Rated<\/p>\n

The ALT series is rated for both covered and open-air installations. Zinc-plated and stainless steel variants are available for coastal or high-humidity environments where plain steel would corrode prematurely.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

\n

Selection Guide<\/p>\n

Which ALT Series Is Right for Your Application?<\/h2>\n
\n
\n

16ALT<\/p>\n

Light\u2013Medium Duty<\/p>\n

Residential driveways, single-lane commercial entrances, indoor parking levels. UTS 71\u2013143 kN. Weight 2.60\u20135.15 kg\/m.<\/p>\n<\/div>\n

\n

20ALT<\/p>\n

Medium\u2013Heavy Duty \u2605 Most Popular<\/p>\n

Multi-lane commercial car parks, logistics yards, multi-storey access gates. UTS 107\u2013323 kN. Weight 3.91\u201311.77 kg\/m. Triplex (-3) available.<\/p>\n<\/div>\n

\n

24ALT<\/p>\n

Resistente<\/p>\n

Wide-span industrial yards, port vehicle control, heavy truck access barriers. UTS 149\u2013298 kN. Weight 5.62\u201311.70 kg\/m. M30 bolt.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

Drive Components<\/p>\n

Correntes e rodas dentadas para estacionamento de carros<\/h2>\n

Where a parking chain barrier is driven by a motorized lifting unit, correct sprocket selection is as critical as chain selection. The sprocket pitch diameter must correspond exactly to the chain pitch \u2014 25.40 mm for 16ALT, 31.75 mm for 20ALT, 38.10 mm for 24ALT. Tooth count determines wrap angle and lifting speed; higher tooth counts deliver smoother engagement at the cost of a larger sprocket body.<\/p>\n

For duplex or triplex chains, verify that the sprocket face width matches the combined strand width \u2014 a mismatch in face width is the most common cause of uneven roller loading and accelerated tooth wear. Split-hub sprockets allow lateral removal without disconnecting the chain run, which simplifies maintenance in confined barrier housings.<\/p>\n

<\/p>\n

\n
\n

Material<\/p>\n

A\u00e7o carbono<\/p>\n

Standard indoor\/covered car parks. Cost-effective, high hardness after heat treatment.<\/p>\n<\/div>\n

\n

Material<\/p>\n

304 Stainless Steel<\/p>\n

Coastal or high-humidity locations. Eliminates surface corrosion that accelerates chain wear.<\/p>\n<\/div>\n

\n

Projeto<\/p>\n

Split Hub<\/p>\n

Lateral removal without disconnecting chain. Ideal for confined barrier housings with restricted access.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

Technical Notes<\/p>\n

Installation & Maintenance<\/h2>\n
\n
\n

Tensioning<\/p>\n

Tension the chain to eliminate sag without placing residual load on anchor posts at rest. A correctly tensioned chain deflects approximately 2\u20134% of span under light lateral hand pressure. Over-tensioning accelerates pin and bushing wear; under-tensioning causes chain-to-ground slap and link fatigue.<\/p>\n<\/div>\n

\n

Lubrifica\u00e7\u00e3o<\/p>\n

Static barrier chains: annual wipe-down with penetrating chain oil is sufficient. For chains running over driven sprockets: lubricate every 200\u2013500 operating hours depending on ambient dust and moisture levels \u2014 same interval as the equivalent corrente de rolos<\/a> application.<\/p>\n<\/div>\n

\n

Inspection Checklist<\/p>\n

Inspect annually for: (1) link elongation exceeding 3% of nominal pitch, (2) cracking or deformation of inner or outer plates, (3) roller seizing or flat spots, (4) corrosion pitting on pins or bushings. A single defective link warrants full-section replacement \u2014 it defines the failure threshold of the entire run.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

\n

Solicite um or\u00e7amento<\/p>\n

Ordering Car Parking Chains<\/h2>\n

ALT parking chains are supplied by the metre or in standard coil lengths. When enquiring, please specify:<\/p>\n

\n
\u2460<\/strong> \u00a0Chain model number (e.g. 20ALT-2)<\/div>\n
\u2461<\/strong> \u00a0Required length in metres<\/div>\n
\u2462<\/strong> \u00a0Surface finish (plain \/ zinc-plated \/ powder-coated)<\/div>\n
\u2463<\/strong> \u00a0Connecting link or half-link requirements<\/div>\n<\/div>\n

Custom lengths, high-visibility coatings, and stainless steel variants available on request. Contact us via roller-chain-manufacturers.com<\/a> for a project-specific quotation.<\/p>\n<\/div>\n

editado por gzl<\/p>","protected":false},"excerpt":{"rendered":"

Correntes de estacionamento s\u00e3o um item de seguran\u00e7a essencial para ve\u00edculos estacionados. Uma fileira dupla de correntes de rolos prende o carro \u00e0 vaga. Elas podem ser instaladas em ambientes internos ou externos e s\u00e3o extremamente dur\u00e1veis. Seja para prevenir vandalismo ou aumentar a visibilidade do seu estacionamento, as correntes de estacionamento s\u00e3o uma \u00f3tima op\u00e7\u00e3o.<\/p>","protected":false},"featured_media":697,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[1401],"product_tag":[],"class_list":["post-662","product","type-product","status-publish","has-post-thumbnail","product_cat-roller-chain","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/roller-chain-manufacturers.com\/pt\/wp-json\/wp\/v2\/product\/662","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/roller-chain-manufacturers.com\/pt\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/roller-chain-manufacturers.com\/pt\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/roller-chain-manufacturers.com\/pt\/wp-json\/wp\/v2\/comments?post=662"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/roller-chain-manufacturers.com\/pt\/wp-json\/wp\/v2\/media\/697"}],"wp:attachment":[{"href":"https:\/\/roller-chain-manufacturers.com\/pt\/wp-json\/wp\/v2\/media?parent=662"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/roller-chain-manufacturers.com\/pt\/wp-json\/wp\/v2\/product_brand?post=662"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/roller-chain-manufacturers.com\/pt\/wp-json\/wp\/v2\/product_cat?post=662"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/roller-chain-manufacturers.com\/pt\/wp-json\/wp\/v2\/product_tag?post=662"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}