--- product_id: 235743645 title: "SV181 Rack and Pinion Focuser, 1.25 inch, Newtonian Reflector Focuser for Newtonian Reflector Telescope" brand: "svbony" price: "$74.35" currency: USD in_stock: true reviews_count: 13 category: "Svbony" url: https://www.desertcart.us/products/235743645-sv181-rack-and-pinion-focuser-1-25-inch-newtonian-reflector store_origin: US region: United States of America --- # Threaded interior reduces internal reflections 65mm smooth rack & pinion travel Brass ring protects eyepiece from marks SV181 Rack and Pinion Focuser, 1.25 inch, Newtonian Reflector Focuser for Newtonian Reflector Telescope **Brand:** svbony **Price:** $74.35 **Availability:** βœ… In Stock ## Summary > πŸ”­ Elevate your stargazing game with precision and style! ## Quick Answers - **What is this?** SV181 Rack and Pinion Focuser, 1.25 inch, Newtonian Reflector Focuser for Newtonian Reflector Telescope by svbony - **How much does it cost?** $74.35 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/235743645-sv181-rack-and-pinion-focuser-1-25-inch-newtonian-reflector) ## Best For - svbony enthusiasts ## Why This Product - Trusted svbony brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Dust-Proof Longevity:** Keep your optics pristine and extend equipment life with the included 1.25-inch dust coverβ€”because your gear deserves the best. - β€’ **Precision Focus Control:** Fine-tune your celestial views with a smooth 65mm rack and pinion travel for razor-sharp clarity. - β€’ **Durable Brass Ring Design:** Protect your 1.25-inch eyepieces from scratches and wear with a built-in brass ring that ensures a secure, mark-free fit. - β€’ **Anti-Reflection Threaded Interior:** Maximize light transmission and minimize glare with a fully threaded interior that cuts down internal reflections. - β€’ **Universal Newtonian Compatibility:** Seamlessly upgrade your 114mm or 150mm Newtonian reflector telescope with this easy-to-install focuser. ## Overview The SV181 Rack and Pinion Focuser is a premium 1.25-inch manual focuser designed for Newtonian reflector telescopes. Featuring a smooth 65mm travel with helical-cut gears, a protective brass ring to prevent eyepiece damage, and a fully threaded interior to reduce reflections, it offers enhanced precision and durability. Compatible with popular 114mm and 150mm Newtonian models, it includes a dust cover to safeguard your investment and comes backed by a 1-year warranty. ## Description desertcart.com : SVBONY SV181 Rack and Pinion Focuser, 1.25 inch, Newtonian Reflector Focuser for Newtonian Reflector Telescope : Electronics Review: GREAT focuser - I replaced the focuser on my Orion 6" dob telescope. Researching I learned that all reflector scopes 6" and smaller share the same cheap sloppy focuser and this is the only one I could find to replace the cheapy. I did have to enlarge the drawtube hole with a rotary tool and drill 4 small holes to mount the base. I am mechanicaly inclined so that was no problem for me. The SVBony focuser is a qaulity unit consisting of a metal base and a far superior drawtube that fits tightly in the base and rides on nylon or delrin guide strips which makes its travel very smooth. The strips also take out all of the drawtube wobble and sloppy fit of the stock plastic focuser. The rack and pinion gears are helical cut and have much less gear backlash than the stock focuser. You cannot beat this focuser for the price period! This focuser is built every bit as good as the replacements sold costing over twice as much as this focuser. This focuser was my introduction to SVbony products and since I have purchased some of there eyepieces as well and boy was I surprised! Very good products indeed. I have no concerns buying SVbony parts and will continue doing so when they have something that I want. Thank you SVbony for bringing your products to the market. You have earned a loyal customer. Review: Good quality and decent price - Nice upgrade for an old focuser on my 1950’s Newtonian ## Features - Smooth SV181 Rack and Pinion Focuser for reflector telescopes accepts 1.25inches eyepieces - The gear can be fine tuning; You can adjust the focal length by the gear; Focuser Travel is 65mm; and fine tuning more accuracy - Brass ring design; Internal brass ring that the set screw hits to hold your 1.25inches eyepiece inside for eliminates marks on your eyepiece barrel - Internal matting design; the inside of the item fully threaded to minimize reflections - Come with 1.25 inch dust cover; It can protect your equipment from dust; Thereby extending the service life of the equipment ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08HX1MWMM | | Additional Features | Adjustable metal gear focuser, smooth focus with dual knobs, built-in brass ring, fully threaded interior | | Best Sellers Rank | #1,399 in Camera & Photo Products ( See Top 100 in Camera & Photo Products ) #26 in Telescope Reflectors | | Brand | SVBONY | | Coating | StarBright XLT | | Compatible Devices | Newtonian reflector telescope - 114mm, Newtonian reflector telescope - 150mm | | Customer Reviews | 4.3 out of 5 stars 105 Reviews | | Eye Piece Lens Description | Plossl | | Field Of View | 0.95 Degrees | | Finderscope | Reflex | | Focal Length Description | 65 millimeters | | Focus Type | Manual Focus | | Item Dimensions D x W x H | 5.7"D x 4.5"W x 4.1"H | | Item Weight | 410 Grams | | Manufacturer | SVBONY | | Manufacturer Part Number | FCAW9140A | | Model Name | SV181 | | Model Number | FCAW9140A | | Mount | 1.25 inches mount | | Objective Lens Diameter | 114 Millimeters | | Power Source | Manual | | Product Dimensions | 5.7"D x 4.5"W x 4.1"H | | Telescope Mount Description | 1.25 inches mount | | Unit Count | 1.0 Count | | Warranty Description | We provide 1 year warranty for SVBONY telescope accessories and 30 days no reason to return. Beyond the warranty period: We still offer maintain service, buyers are required to afford corresponding costs. We processed in the most hassle-free way possible.You just need to contact with us on Amazon ,we will reply you within 12 hours | ## Product Details - **Brand:** SVBONY - **Eye Piece Lens Description:** Plossl - **Finderscope:** Reflex - **Focus Type:** Manual Focus - **Item Weight:** 410 Grams - **Model Name:** SV181 - **Objective Lens Diameter:** 114 Millimeters - **Power Source:** Manual - **Product Dimensions:** 5.7"D x 4.5"W x 4.1"H - **Telescope Mount Description:** 1.25 inches mount ## Images ![SV181 Rack and Pinion Focuser, 1.25 inch, Newtonian Reflector Focuser for Newtonian Reflector Telescope - Image 1](https://m.media-amazon.com/images/I/61EQY4EPQtL.jpg) ## Questions & Answers **Q: Will the sv181 fit on an orion xt6?** A: thanks so much for your question. Yes, this SVBONY SV181 Rack and Pinion Focuser is suitable for orion xt6. **Q: What is the width of the rack itself? I know the length is 64mm but I need to know the width** A: Dear customer , Thanks for your contact. 74mm. For accessories;we provide 2 months warranty;within 2 months;you can return for refund or replacement.If you have any other questions about warranty;please contact us freely;we will work with you win to win. If my reply still doesn't answer your question well or you want to know more details about this product, please contact us by message on Amazon. Because the customer's message can be seen in the first time on Amazon, and will solve the problem as soon as possible. Once I receive your response, I will try my best to answer your questions. Sincerely look forward to your reply. Best wishes ! Kelly **Q: How can I add a 1 1/4 inch UHC filter at the bottom of the threaded eyepiece barrel?** A: thanks for your question, This SVBONY SV181 Rack and Pinion Focuser does not have filter threads and cannot attach filters directly, you can add filters to the bottom of your eyepiece when inserting it. **Q: Will this fit on a celestron 130 slt?** A: thanks for your question. Yes, the SVBONY SV181 Rack and Pinion Focuser fit on a celestron 130 slt. If any, please concact us via amazon message, we are always here for you. ## Customer Reviews ### ⭐⭐⭐⭐⭐ GREAT focuser *by M***S on July 5, 2021* I replaced the focuser on my Orion 6" dob telescope. Researching I learned that all reflector scopes 6" and smaller share the same cheap sloppy focuser and this is the only one I could find to replace the cheapy. I did have to enlarge the drawtube hole with a rotary tool and drill 4 small holes to mount the base. I am mechanicaly inclined so that was no problem for me. The SVBony focuser is a qaulity unit consisting of a metal base and a far superior drawtube that fits tightly in the base and rides on nylon or delrin guide strips which makes its travel very smooth. The strips also take out all of the drawtube wobble and sloppy fit of the stock plastic focuser. The rack and pinion gears are helical cut and have much less gear backlash than the stock focuser. You cannot beat this focuser for the price period! This focuser is built every bit as good as the replacements sold costing over twice as much as this focuser. This focuser was my introduction to SVbony products and since I have purchased some of there eyepieces as well and boy was I surprised! Very good products indeed. I have no concerns buying SVbony parts and will continue doing so when they have something that I want. Thank you SVbony for bringing your products to the market. You have earned a loyal customer. ### ⭐⭐⭐⭐⭐ Good quality and decent price *by A***R on January 21, 2025* Nice upgrade for an old focuser on my 1950’s Newtonian ### ⭐⭐⭐⭐ All Metal replacement focuser with some minor flaws *by P***U on January 20, 2021* Plus for all metal construction. Curve on plate is for a 5 inch tube. I have a 4 1/2 inch tube and needed to make a spacer to fill the gap between the tube and the focused. The focus adjuster was very loose and wobbly. Strap that holds the adjuster knob shaft is poorly designed and doesn’t do the job properly. I was able to tighten in up by bending the straps so it pushes the shaft closer to the gear. The strap is made of thin steel and this should have been done at the factory or a better tighter fitting part made. Once tightened it seemed to work acceptable but it might loosen again over time. Tension locking screw on adjuster is a nice feature that OEM adjusters don't have. Good product with some flaws which can be fixed with a little effort. The draw tube and gears are all metal which is nice. ## Frequently Bought Together - SVBONY SV181 Rack and Pinion Focuser, 1.25 inch, Newtonian Reflector Focuser for Newtonian Reflector Telescope - SVBONY Telescope Lens 23mm Telescopes Eyepieces Wide Angle 62 Degree Aspheric Eyepiece Fully Coated Lens for 1.25 inches Astronomic Telescopes - Astronomical Telescope Accessories D114F900mm with Short-axis Secondary Mirror 25mm, Newton Reflector Spherical Mirror --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/235743645-sv181-rack-and-pinion-focuser-1-25-inch-newtonian-reflector](https://www.desertcart.us/products/235743645-sv181-rack-and-pinion-focuser-1-25-inch-newtonian-reflector) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-17*