{"product_id":"the-index-head-precision-rotary-table","title":"The Index Head | 4-Inch Precision Rotary Table with 3-Jaw Chuck","description":"\u003cdiv class=\"product-narrative\"\u003e\n\u003cp\u003e\u003cstrong\u003ePrecision is a relationship between two surfaces.\u003c\/strong\u003e A rotary table is the simplest way to add a fourth axis to a three-axis mill, and it is also the accessory where cheap examples reveal themselves fastest. Backlash, a scale that drifts, a chuck that will not repeat, and suddenly the curved slot that looked fine on the drawing is two thousandths out at the far end.\u003c\/p\u003e\n\u003cp\u003eThis 4 inch unit is built for small mills and the work they actually get: dividing cuts, bolt circles, radius slots, angled faces and light production runs. The table is 100mm in diameter with an 80mm three-jaw chuck, mounted either horizontally or vertically, sitting 120mm high in the horizontal position and 86mm centre height when vertical. Those numbers decide whether your spindle can reach the work, so they are worth checking against your machine before ordering.\u003c\/p\u003e\n\u003cp\u003eThe worm gear runs at 1:36, which means one full turn of the handwheel moves the table ten degrees. The handwheel scale divides into 100 graduations with a 6 minute value per division, and a dedicated degree lock holds the setting once it is made. That combination is what makes dividing work practical: you set an angle, lock it, cut, release and index. The vernier reading is deliberately simple, since a scale you have to interpret is a scale that introduces error.\u003c\/p\u003e\n\u003cp\u003eThe chuck arrives with both internal and external jaws, opened and closed with a T-shaped wrench, and it holds round, hexagonal and square stock without a separate collet set. Net weight is 5.3kg, which is heavy enough to stay rigid under a cut and light enough for one person to lift onto a bench mill. For a hobby machinist moving from clamped work to indexed work, this is the accessory that changes what the machine can make.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eTen degrees per turn, six minutes per line, and no guessing at the angle.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr style=\"margin:24px 0;border:0;border-top:1px solid #e8e8e8;\"\u003e\u003cdiv class=\"product-features\"\u003e\n\u003ch3\u003eWhat the Index Head Actually Does\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n\u003cli style=\"padding:11px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003e4 inch \/ 100mm table\u003c\/strong\u003e with an 80mm three-jaw chuck for round, hex and square stock.\u003c\/li\u003e\n\u003cli style=\"padding:11px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003eHorizontal or vertical mounting\u003c\/strong\u003e at 120mm top height or 86mm centre height to suit your spindle reach.\u003c\/li\u003e\n\u003cli style=\"padding:11px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003e1:36 worm gear ratio\u003c\/strong\u003e giving ten degrees of table rotation per full handwheel turn.\u003c\/li\u003e\n\u003cli style=\"padding:11px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003e100-division handwheel scale\u003c\/strong\u003e at 6 minutes per graduation for accurate indexing.\u003c\/li\u003e\n\u003cli style=\"padding:11px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003eDedicated degree lock\u003c\/strong\u003e that holds the setting through a cut instead of drifting under load.\u003c\/li\u003e\n\u003cli style=\"padding:11px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003eInternal and external jaws\u003c\/strong\u003e supplied with a T-shaped chuck wrench, no collet set required.\u003c\/li\u003e\n\u003cli style=\"padding:11px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003e5.3kg cast body\u003c\/strong\u003e rigid under load and light enough for a bench mill setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eTable diameter:\u003c\/strong\u003e 4 in \/ 100 mm\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eChuck:\u003c\/strong\u003e 3-jaw, 80 mm, internal and external jaws included\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eWorm gear ratio:\u003c\/strong\u003e 1:36\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eHandwheel scale:\u003c\/strong\u003e 100 graduations, 6 minutes per division\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eTop height, horizontal:\u003c\/strong\u003e 4.7 in \/ 120 mm\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eCentre height, vertical:\u003c\/strong\u003e 3.4 in \/ 86 mm\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eOverall dimensions:\u003c\/strong\u003e 6.3 x 5.8 x 4.7 in \/ 160 x 148 x 120 mm\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eNet weight:\u003c\/strong\u003e 11.7 lbs \/ 5.3 kg\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e horizontal or vertical\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e CE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-applications\"\u003e\n\u003ch3\u003eWhere It Belongs\u003c\/h3\u003e\n\u003cp\u003eBench mill owners use the 4 inch table for bolt circles on flange plates, radius slots in brackets and angled faces on small housings that would otherwise need a tilting vise and a lot of patience. Model engineers value the 1:36 ratio because dividing head work becomes arithmetic rather than guesswork. Small job shops keep one mounted on a dedicated plate so a dividing job can be set up without disturbing the main vise. Gunsmiths and knife makers use the indexing capability for fluting and radial features on round stock. Anyone producing a short run of identical parts benefits more from repeatable indexing than from a larger machine.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-faq\"\u003e\n\u003ch3\u003eQuestions Buyers Ask Before Ordering\u003c\/h3\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will this fit my mill?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Check two numbers against your machine: the 120mm horizontal top height, which sets how much Z travel the setup consumes, and the 100mm table diameter, which sets the work envelope. A bench mill with limited quill travel may need the table mounted vertically or on a riser block.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I calculate a division on a 1:36 table?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: One handwheel turn equals ten degrees. For a 24-hole bolt circle, each step is 15 degrees, so one turn plus half of the 100-division scale at 6 minutes per division. For 36 divisions, one turn per step lands exactly, which is why this ratio is popular for dividing work.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the chuck hold square stock?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The three-jaw chuck grips round and hexagonal stock accurately and square stock with reasonable centring. For critical square work, indicate the part after clamping or use the four-jaw chuck from your lathe on a backplate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is there backlash in the worm gear?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Any worm drive has some, and this table is no exception. The practical approach is to always approach the final position from the same direction, which removes the effect from the work. A degree lock holds the setting once it is made.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I mount it vertically on the mill table?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, the body is machined for both orientations, with the vertical centre height at 86mm. Vertical mounting is how you cut angled faces or drill radial holes, and it needs the table bolted to an angle plate or directly to a slotted table.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the chuck removable?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, it mounts on a backplate and comes off for cleaning or for fitting a different workholding fixture. Removal is worth doing after any job that produces fine chips, since swarf inside the chuck is the usual cause of runout that appears months later.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-gallery\" style=\"margin-top:30px;text-align:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S2e392926de94492b9bab0e86dd963947k.webp?v=1768964569\" alt=\"SucceBuy 4 inch precision milling rotary table\" style=\"max-width:100%;margin:8px auto;border-radius:6px;display:block;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S10336ea1f16c46ffb089dba30ee06d037.webp?v=1768964569\" alt=\"SucceBuy 4 inch precision milling rotary table\" style=\"max-width:100%;margin:8px auto;border-radius:6px;display:block;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S094589a29f7046eb9542bd328861180bV.webp?v=1768964569\" alt=\"SucceBuy 4 inch precision milling rotary table\" style=\"max-width:100%;margin:8px auto;border-radius:6px;display:block;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sdd050d57e453482fab1b07c138418dfci.webp?v=1768964569\" alt=\"SucceBuy 4 inch precision milling rotary table\" style=\"max-width:100%;margin:8px auto;border-radius:6px;display:block;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S9a601f1c6ab44e67979119fe5b980624J.webp?v=1768964569\" alt=\"SucceBuy 4 inch precision milling rotary table\" style=\"max-width:100%;margin:8px auto;border-radius:6px;display:block;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Scc3683b14ae44fa8bbb7a0b40f5d7161r.webp?v=1768964570\" alt=\"SucceBuy 4 inch precision milling rotary table\" style=\"max-width:100%;margin:8px auto;border-radius:6px;display:block;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Se86809e735bb439692298767172698a2n.webp?v=1768964569\" alt=\"SucceBuy 4 inch precision milling rotary table\" style=\"max-width:100%;margin:8px auto;border-radius:6px;display:block;\" loading=\"lazy\"\u003e\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"Product\",\n\"name\":\"The Index Head | 4-Inch Precision Rotary Table with 3-Jaw Chuck\",\"sku\":\"SUCCE-HV4-KP\",\"brand\":{\"@type\":\"Brand\",\"name\":\"SucceBuy\"},\n\"description\":\"4 inch precision rotary table with 1:36 worm gear, 80mm three-jaw chuck, horizontal and vertical mounting for milling and dividing work.\",\n\"url\":\"https:\/\/eastsupplier.com\/products\/the-index-head-precision-rotary-table\",\n\"image\":[\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S2e392926de94492b9bab0e86dd963947k.webp?v=1768964569\"],\n\"offers\":{\"@type\":\"Offer\",\"url\":\"https:\/\/eastsupplier.com\/products\/the-index-head-precision-rotary-table\",\"priceCurrency\":\"USD\",\"price\":\"297.58\",\"availability\":\"https:\/\/schema.org\/InStock\",\"itemCondition\":\"https:\/\/schema.org\/NewCondition\",\"seller\":{\"@type\":\"Organization\",\"name\":\"EastSupplier\"}},\n\"manufacturer\":{\"@type\":\"Organization\",\"name\":\"SucceBuy\"}}\n\u003c\/script\u003e","brand":"East Supplier Platform","offers":[{"title":"100 mm \/ United States","offer_id":48381950001375,"sku":"1005007921436085-100 mm-United States","price":297.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S2e392926de94492b9bab0e86dd963947k.webp?v=1768964569","url":"https:\/\/eastsupplier.com\/ja-es\/products\/the-index-head-precision-rotary-table","provider":"EastSupplier Platform","version":"1.0","type":"link"}