{"id":2865,"date":"2026-04-02T08:18:13","date_gmt":"2026-04-02T08:18:13","guid":{"rendered":"https:\/\/wheelsprocket.xyz\/product\/finished-bore-sprocket-fbk80b\/"},"modified":"2026-04-03T07:42:49","modified_gmt":"2026-04-03T07:42:49","slug":"finished-bore-sprocket-fbk80b","status":"publish","type":"product","link":"https:\/\/wheelsprocket.xyz\/nn\/product\/finished-bore-sprocket-fbk80b\/","title":{"rendered":"Finished Bore Sprocket FBK80B"},"content":{"rendered":"
\n\"FBK80B<\/p>\n

Technical Specifications \u2014 FBK80B Finished Bore Sprocket<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nValue<\/th>\nNotes<\/th>\n<\/tr>\n<\/thead>\n
Model<\/td>\nFBK80B<\/td>\nAsian Standard FBK\/FBN Series<\/td>\n<\/tr>\n
Pitch<\/td>\n25.400 mm<\/td>\n<\/td>\n<\/tr>\n
Tooth Width (T)<\/td>\n14.6 mm<\/td>\n<\/td>\n<\/tr>\n
Teeth Range<\/td>\nZ=9\u201323<\/td>\n<\/td>\n<\/tr>\n
Hub Style<\/td>\nB Type (finished bore, pre-machined)<\/td>\n<\/td>\n<\/tr>\n
Bore Range<\/td>\nTo your specification<\/td>\nKeyway standard; specify shaft dia.<\/td>\n<\/tr>\n
Material<\/td>\nC45 Carbon Steel<\/td>\n<\/td>\n<\/tr>\n
Tooth Hardness<\/td>\nHRC 50\u201360<\/td>\nInduction hardened<\/td>\n<\/tr>\n
Bore Tolerance<\/td>\nH7<\/td>\nStandard fit; H6 on request<\/td>\n<\/tr>\n
Keyway<\/td>\nStandard 120\u00b0 position<\/td>\nDIN 6885 keys<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Key Features<\/h2>\n
\n
\n\n\u26a1<\/span> Ready-to-Install<\/summary>\n
Pre-machined bore to H7 tolerance eliminates on-site boring \u2014 simply align, key, and run. Saves 1\u20133 hours of workshop time per sprocket replacement.<\/div>\n<\/details>\n
\n\n <\/span> H7 Bore Precision<\/summary>\n
CNC-bored to H7 tolerance (ISO 286) with surface finish Ra 1.6 \u00b5m \u2014 ensuring a precision shaft fit that prevents fretting, micro-movement, and hub fatigue failure.<\/div>\n<\/details>\n
\n\n <\/span> Standard Keyway Included<\/summary>\n
DIN 6885 keyway pre-cut at the 120\u00b0 position; set-screw hole tapped and included. No additional machining required.<\/div>\n<\/details>\n
\n\n <\/span> Fast Dispatch on Standard Sizes<\/summary>\n
Standard bore finishes are available from stock for immediate dispatch. Specify your bore diameter \u2014 most are produced within 3\u20135 days.<\/div>\n<\/details>\n<\/div>\n

Applications<\/h2>\n
\n
\n\"Conveyor<\/p>\n
\n
Conveyor Maintenance<\/div>\n
Quick sprocket replacement on conveyor drives without on-site boring capability<\/div>\n<\/div>\n<\/div>\n
\n\"Agricultural<\/p>\n
\n
Agricultural Drives<\/div>\n
End-of-season sprocket replacement on harvester and planter drives<\/div>\n<\/div>\n<\/div>\n
\n\"Plant<\/p>\n
\n
Plant Maintenance<\/div>\n
Rapid sprocket changeout in remote locations without machine shop access<\/div>\n<\/div>\n<\/div>\n
\n\"Production<\/p>\n
\n
Production Lines<\/div>\n
Minimise production downtime with pre-machined finished bore replacement sprockets<\/div>\n<\/div>\n<\/div>\n<\/div>\n

Customer Reviews<\/h2>\n
\n
Shane D.  \u2605\u2605\u2605\u2605\u2605<\/span>   Australia<\/span><\/div>\n
“Finished bore FBK80B sprockets let our maintenance crew swap sprockets without calling in the machinist \u2014 cut our maintenance window from 4 hours to 45 minutes.”<\/div>\n
FBK80B Z=15 30mm bore · March 2025<\/div>\n<\/div>\n
\n
Magnus L.  \u2605\u2605\u2605\u2605\u2605<\/span>   Sweden<\/span><\/div>\n
“H7 bore tolerance was confirmed by our QA team using plug gauges \u2014 spot on. Shaft fit is perfect without any shimming.”<\/div>\n
FBK80B Z=19 45mm bore · February 2025<\/div>\n<\/div>\n
\n
Karen P.  \u2605\u2605\u2605\u2605\u2606<\/span>   New Zealand<\/span><\/div>\n
“Good product, arrived as specified. Would appreciate a broader standard bore size range stocked from inventory.”<\/div>\n
FBK80B Z=12 28mm bore · January 2025<\/div>\n<\/div>\n
\n
Tom\u00e1s R.  \u2605\u2605\u2605\u2605\u2605<\/span>   Portugal<\/span><\/div>\n
“For our maintenance team, pre-finished bore sprockets are invaluable. These are consistently bored to tolerance and deliver fast.”<\/div>\n
FBK80B Z=18 35mm bore · April 2025<\/div>\n<\/div>\n

<\/span>FAQ<\/h2>\n
\n\n►  How do I specify a finished bore sprocket?<\/summary>\n
Specify: model number, tooth count (Z), shaft diameter, bore tolerance (H7 standard), keyway dimensions (or ‘no keyway’), and whether a set-screw is required.<\/div>\n<\/details>\n
\n\n►  What is the minimum bore diameter available?<\/summary>\n
Minimum bore depends on tooth count \u2014 for small tooth counts, hub wall thickness limits the minimum. Contact us with your tooth count and required bore to confirm feasibility.<\/div>\n<\/details>\n
\n\n►  Can you bore to a non-standard tolerance (e.g. H6 or j6)?<\/summary>\n
Yes. H6, H5, and special fit tolerances are available on request with 2\u20133 extra days for precision boring. Specify the required tolerance at order.<\/div>\n<\/details>\n
\n\n►  Do you include the key with the sprocket?<\/summary>\n
A DIN 6885 key sized to fit the keyway is included with most finished bore sprockets. Please confirm at order if a key is required.<\/div>\n<\/details>\n
\n\n►  Is there an additional cost for the finished bore machining?<\/summary>\n
Finished bore versions carry a modest machining surcharge over stock-bore prices. Contact us for a precise quote based on tooth count and bore diameter.<\/div>\n<\/details>\n
    \n
  1. Verify shaft is clean, within tolerance, and free of burrs before assembly.<\/li>\n
  2. Slide sprocket onto shaft (H7\/k6 slip or light press fit); align keyway and insert key.<\/li>\n
  3. Tighten set-screw to the hub marking torque specification.<\/li>\n
  4. Align with mating sprocket; install chain and adjust tension.<\/li>\n
  5. Check bore for any fretting marks after first 100 hours \u2014 if fretting is present, check shaft diameter and fit tolerance.<\/li>\n<\/ol>\n
    ✓ ISO 9001:2015<\/span>✓ ANSI B29.1<\/span>✓ ISO\/DIN 8187<\/span>✓ JIS B 1801<\/span>✓ BS\/DIN Standards<\/span>✓ GB Standards<\/span><\/div>\n
    \n
    \n\"Ever-power<\/p>\n
    \n

    Why Choose 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>
    \n4M+ pcs\/year<\/span>
    \nOEM Capable<\/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 FBK80B finished bore sprocket<\/strong> (25.400 mm pitch) arrives pre-machined to your specified shaft diameter<\/strong> \u2014 eliminating on-site boring, reducing installation time, and ensuring a precision-fit bore that prevents fretting and hub loosening. Manufactured from C45 carbon steel with hardened teeth (HRC 50–60) and a 120\u00b0 keyway position, it covers Z=9\u201323 and is the fastest path from order to running for Australian maintenance teams.<\/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":[6920,6847,6919,6921],"class_list":{"0":"post-2865","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-sprockets","7":"product_cat-standard-sprockets","8":"product_tag-25-4mm-finished-bore-sprocket","9":"product_tag-asian-standard","10":"product_tag-fbk80b-finished-bore-sprocket","11":"product_tag-ready-to-install-sprocket","13":"first","14":"instock","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/wheelsprocket.xyz\/nn\/wp-json\/wp\/v2\/product\/2865","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wheelsprocket.xyz\/nn\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/wheelsprocket.xyz\/nn\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/wheelsprocket.xyz\/nn\/wp-json\/wp\/v2\/comments?post=2865"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wheelsprocket.xyz\/nn\/wp-json\/wp\/v2\/media\/2731"}],"wp:attachment":[{"href":"https:\/\/wheelsprocket.xyz\/nn\/wp-json\/wp\/v2\/media?parent=2865"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/wheelsprocket.xyz\/nn\/wp-json\/wp\/v2\/product_cat?post=2865"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/wheelsprocket.xyz\/nn\/wp-json\/wp\/v2\/product_tag?post=2865"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}