{"id":2858,"date":"2026-04-02T08:17:06","date_gmt":"2026-04-02T08:17:06","guid":{"rendered":"https:\/\/wheelsprocket.xyz\/product\/stock-bore-sprocket-nk100b-nk100c\/"},"modified":"2026-04-03T07:44:01","modified_gmt":"2026-04-03T07:44:01","slug":"stock-bore-sprocket-nk100b-nk100c","status":"publish","type":"product","link":"https:\/\/wheelsprocket.xyz\/it\/product\/stock-bore-sprocket-nk100b-nk100c\/","title":{"rendered":"Stock Bore Sprocket NK100B \/ NK100C"},"content":{"rendered":"
\n\"NK100B<\/p>\n

<\/span>Technical Specifications \u2014 NK100B \/ NK100C Stock Bore Sprocket<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parametro<\/th>\nValue<\/th>\nNote<\/th>\n<\/tr>\n<\/thead>\n
Model \/ Series<\/td>\nNK100B \/ NK100C<\/td>\nAsian Standard \/ NK Series<\/td>\n<\/tr>\n
Pece<\/td>\n31.750 mm (1-1\/4″)<\/td>\n<\/td>\n<\/tr>\n
Roller Diameter<\/td>\n19.05 mm<\/td>\n<\/td>\n<\/tr>\n
Tooth Width (T)<\/td>\n7.5 mm<\/td>\n<\/td>\n<\/tr>\n
Teeth Range<\/td>\nZ=9\u201375<\/td>\n<\/td>\n<\/tr>\n
Hub Types<\/td>\nB\/C Type Solid; B\/C Type Weld<\/td>\nSolid or welded<\/td>\n<\/tr>\n
Material<\/td>\nC45 Carbon Steel<\/td>\nHardened teeth<\/td>\n<\/tr>\n
Durezza del dente<\/td>\nHRC 50\u201360<\/td>\nInduction hardened<\/td>\n<\/tr>\n
Superficie<\/td>\nBlack oxide \/ plain<\/td>\n<\/td>\n<\/tr>\n
Bore<\/td>\nStock bore (machined to drawing)<\/td>\nFinished bore available<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Key Features<\/h2>\n
\n
\n
<\/div>\n
\n
Asian Standard NK Series<\/div>\n
Manufactured to the established NK (Asian) standard used across Asia-Pacific markets \u2014 ensures compatibility with locally available chain and drive components at competitive pricing.<\/div>\n<\/div>\n<\/div>\n
\n
<\/div>\n
\n
Induction-Hardened Teeth<\/div>\n
HRC 50\u201360 tooth surface hardness delivers 3\u00d7 the wear life of un-treated equivalents, reducing replacement frequency and total cost of ownership in demanding industrial environments.<\/div>\n<\/div>\n<\/div>\n
\n
<\/div>\n
\n
Multiple Hub Configurations<\/div>\n
B Type (single hub) and C Type (double hub) in both solid bore and welded hub styles cover the full range of shaft mounting requirements from standard drives to heavy-load gearbox outputs.<\/div>\n<\/div>\n<\/div>\n
\n
<\/div>\n
\n
Stock Availability<\/div>\n
Major tooth counts maintained in stock for 2\u20135 day dispatch to anywhere in Australia, minimising production downtime when replacement is needed urgently.<\/div>\n<\/div>\n<\/div>\n<\/div>\n

Compatibility<\/h2>\n

The NK100B \/ NK100C sprocket is designed for 31.750 mm pitch industrial roller chain. Bore is supplied to drawing or standard stock bore; specify shaft diameter for finished bore versions. Keyway and set-screw options available on solid hub types. View our full NK sprocket range<\/a>.<\/p>\n

Applications<\/h2>\n
\n
\n\"General<\/p>\n
\n
General Industry<\/div>\n
Conveyor, pump, fan, and general machinery chain drives<\/div>\n<\/div>\n<\/div>\n
\n\"Agricultural<\/p>\n
\n
Agricultural Equipment<\/div>\n
Grain handling, irrigation, and processing equipment drives<\/div>\n<\/div>\n<\/div>\n
\n\"Construction<\/p>\n
\n
\u26cf\ufe0f Construction & Mining<\/div>\n
Auxiliary drives on excavation, crushing, and handling equipment<\/div>\n<\/div>\n<\/div>\n
\n\"Processing<\/p>\n
\n
Processing Lines<\/div>\n
Food, beverage, and packaging machine chain drives<\/div>\n<\/div>\n<\/div>\n<\/div>\n

Customer Reviews<\/h2>\n
\n
\nDavid W.<\/span>
\n\u2605\u2605\u2605\u2605\u2605<\/span>
\n Australia<\/span><\/div>\n
“Running NK100B \/ NK100C sprockets on our conveyor drive for 18 months \u2014 no wear issues, no adjustment needed. Great value for money.”<\/div>\n
NK100B \/ NK100C Z=19 B Type · March 2025<\/div>\n<\/div>\n
\n
\nHiroshi T.<\/span>
\n\u2605\u2605\u2605\u2605\u2605<\/span>
\n Japan<\/span><\/div>\n
“Dimensional accuracy of the NK100B \/ NK100C meets our in-house standard. Tooth profile is clean and consistent.”<\/div>\n
NK100B \/ NK100C Z=23 C Type · January 2025<\/div>\n<\/div>\n
\n
\nLin F.<\/span>
\n\u2605\u2605\u2605\u2605\u2606<\/span>
\n Taiwan<\/span><\/div>\n
“Good quality NK series sprockets at competitive price. Lead time is reasonable for non-stock sizes.”<\/div>\n
NK100B \/ NK100C Z=15 Weld Type · February 2025<\/div>\n<\/div>\n
\n
\nAdam K.<\/span>
\n\u2605\u2605\u2605\u2605\u2605<\/span>
\n UK<\/span><\/div>\n
“Excellent product. We import these for our conveyor refurbishment business \u2014 consistent quality order after order.”<\/div>\n
NK100B \/ NK100C Z=21 B Type · April 2025<\/div>\n<\/div>\n

FAQ<\/h2>\n
\n\n►  What chain does the NK series sprocket use?<\/summary>\n
The NK100B \/ NK100C sprocket is designed for 31.750 mm pitch roller chain of Asian-standard origin (matching ANSI-derived dimensions). Always verify inner width and roller diameter when selecting chain.<\/div>\n<\/details>\n
\n\n►  What is the difference between B Type Solid and B Type Weld?<\/summary>\n
B Type Solid has a machined hub bore (standard or finished to drawing). B Type Weld has a welded-on hub plate for applications where the sprocket must be welded to a shaft stub or disc.<\/div>\n<\/details>\n
\n\n►  Are finished bore versions available?<\/summary>\n
Yes. Specify your shaft diameter and keyway dimensions at order. Finished bore lead time is 5\u20137 days from order confirmation.<\/div>\n<\/details>\n
\n\n►  Can I get a material test certificate for the C45 steel?<\/summary>\n
Yes. EN 10204 2.2 chemical composition certificates are available on request. Contact us before ordering to arrange documentation.<\/div>\n<\/details>\n
\n\n►  What is the maximum bore for each tooth count?<\/summary>\n
Maximum bore increases with tooth count. Contact our sales team with your tooth count and required bore diameter \u2014 we will confirm feasibility and maximum available bore.<\/div>\n<\/details>\n
    \n
  1. Verify bore size against shaft diameter; machine finished bore if required.<\/li>\n
  2. Clean shaft and bore; apply light machine oil to ease assembly.<\/li>\n
  3. Position sprocket and align within 0.5 mm lateral offset of the mating sprocket.<\/li>\n
  4. Install roller chain and set slack-side tension to 2% of centre distance.<\/li>\n
  5. Check all set-screws and key fit after initial 4-hour loaded operation.<\/li>\n<\/ol>\n
    \u2713 ISO 9001:2015<\/span>\u2713 ANSI B29.1<\/span>✓ ISO\/DIN 8187<\/span>\u2713 JIS B 1801<\/span>✓ BS\/DIN Standards<\/span>✓ GB Standards<\/span><\/div>\n
    \n
    \n\"Fabbrica<\/p>\n
    \n

    Perch\u00e9 scegliere Ever-power Australia?<\/h3>\n

    We are a vertically integrated manufacturer with over 25 years of chain drive experience. Our facility spans 35,000 m² and produces over 4 million sprockets per year. We supply OEM partners, distributors, and direct industrial buyers across Australia, with products meeting GB, ISO, ANSI, JIS, DIN and BS standards.<\/p>\n

    \nISO 9001 Certified<\/span>
    \nOltre 4 milioni di pezzi all'anno<\/span>
    \nCapacit\u00e0 OEM<\/span>
    \nAU Stock Available<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n
    \n

    Ready to Order? Get a Free Quote Today<\/h3>\n

    Our engineering team is available 24\/7 to assist with specifications, custom designs, and volume pricing for Australian businesses.<\/p>\n

    📩 Request a Quote<\/a>
    \n 
    \n    🔍 Browse All Products<\/a><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

    The NK100B \/ NK100C stock bore sprocket<\/strong> (31.750 mm pitch, 1-1\/4″) is an Asian-standard (NK-series) industrial sprocket<\/strong> in C45 carbon steel with hardened teeth, designed for medium-to-heavy chain drives across conveyors, pumps, and general industrial machinery. Available in B and C hub types, with solid bore and welded hub options across Z=9\u201375, it delivers reliable, cost-effective power transmission for Australian industrial applications.<\/p>","protected":false},"featured_media":2731,"comment_status":"closed","ping_status":"open","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_cat":[6693,7059],"product_tag":[6727,6894,6895,6893],"class_list":{"0":"post-2858","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-sprockets","7":"product_cat-standard-sprockets","8":"product_tag-31-75mm-pitch-sprocket","9":"product_tag-large-asian-standard-sprocket","10":"product_tag-nk100-industrial-chain-drive","11":"product_tag-nk100b-sprocket","13":"first","14":"instock","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/wheelsprocket.xyz\/it\/wp-json\/wp\/v2\/product\/2858","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wheelsprocket.xyz\/it\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/wheelsprocket.xyz\/it\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/wheelsprocket.xyz\/it\/wp-json\/wp\/v2\/comments?post=2858"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wheelsprocket.xyz\/it\/wp-json\/wp\/v2\/media\/2731"}],"wp:attachment":[{"href":"https:\/\/wheelsprocket.xyz\/it\/wp-json\/wp\/v2\/media?parent=2858"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/wheelsprocket.xyz\/it\/wp-json\/wp\/v2\/product_cat?post=2858"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/wheelsprocket.xyz\/it\/wp-json\/wp\/v2\/product_tag?post=2858"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}