Linear Guideway Supplier: Linear Motion Guideways and Blocks
A linear guideway is a hardened steel rail with a recirculating-ball block that guides a machine axis in a straight line with low friction and high stiffness. TriQuench India supplies linear motion guideways in 15, 20 and 25 mm sizes: HGR rails up to 4000 mm with HGH square and HGW flange blocks.
Featured Linear Motion Hardware
LM Rail HGR 15C
Precision ground 15mm heavy-duty linear guide rail engineered for high-rigidity CNC router axes.
View LM Rail HGR 15C →PMI MSA 20S LM Block
Premium precision linear guide block with 4-way equal load capacity and superior dust-proofing.
View PMI MSA 20S Block →TQI LM Block HGH 25CA RG
High-assembly square linear guide block designed for heavy milling loads and enduring accuracy.
View TQI HGH 25CA Block →Why Choose TriQuench LM Guideways?
High Rigidity
Four-row circular arc contact provides equal load capacity in all directions.
Self-Aligning
Absorbs installation errors due to surface inaccuracies, ensuring smooth travel.
Dust Protection
Integrated end seals prevent wood dust and metal chips from entering the bearing block.
Linear motion guideway and linear guide block options
As a linear guideway supplier in India, we stock rails and blocks for CNC routers, laser and plasma machines and automation. A linear guide block rides on the rail; choose the HGH20 linear guide (square block) or HGW flange block to suit how the carriage is bolted. For a linear guide for CNC router gantries, 20 mm rails are the common choice, 15 mm for light axes, and 25 mm for heavy gantries and stone routers.
Linear Guideway: frequently asked questions
How do I choose linear guide rail size?
Size the rail from the load per block, the moment loads from overhung parts, the required stiffness and the travel length. On CNC routers, 15 mm rails suit light axes, 20 mm rails suit most gantries and Z axes, and 25 mm rails suit heavy gantries, stone routers and machines with large cutters. Use at least two blocks per rail.
What is the difference between HGH and HGW blocks?
HGH is a square, narrower block bolted from the top. HGW is a flange block with wider mounting wings that can be bolted from the top or the bottom, which spreads the load and suits lower carriage heights. Both run on the same HGR rail of the same size, so choose by mounting space and how the carriage is fixed.
What do BG and RG mean on linear guide blocks?
On our listings, BG and RG mark two block series for the same rail sizes; RG blocks are listed as the roller series, designed for higher stiffness and load. Tell us the load and duty and we will recommend the series.
Related products, guides and services
Get a quote for Linear Guideway
Tell us the model, size or the machine it is for. Our Ahmedabad team replies with specifications, availability and price.
Pan-India 24–48h express dispatch • P4 ceramic bearings • ISO 1940 Grade G0.4 dynamic balancing
Linear Motion (LM) Guideways Technical Specification & Price Comparison Matrix
Comprehensive technical parameters, spindle speeds, tool-holding tapers, and approximate price ranges in India across genuine TriQuench models.
| Model / Configuration | Power (kW / HP) | Rated Speed (RPM) | Cooling Method | Collet / Taper | Voltage Rating | Price Range (India) |
|---|---|---|---|---|---|---|
| HGR15 Linear Rail & Block | 15 mm Rail Width | Dynamic Load 11.38 kN | C0 Normal / C1 Light Preload | HGH15CA / HGW15CC Blocks | Travel Parallelism < 0.005 mm | ₹2,800 – ₹4,200/m |
| HGR20 Standard Heavy | 20 mm Rail Width | Dynamic Load 17.75 kN | C1 Light / C2 Medium Preload | HGH20CA / HGW20CC Flange | 4-Way Equal Load Architecture | ₹3,600 – ₹5,400/m |
| HGR25 High-Rigidity Series | 25 mm Rail Width | Dynamic Load 26.48 kN | C2 Medium Preload (Zero Play) | HGH25CA / HGW25CC Heavy | VMC / High-Speed Router Class | ₹4,800 – ₹7,200/m |
| HGR30 Machining Center Class | 30 mm Rail Width | Dynamic Load 38.74 kN | High Shock Load Damping | HGH30CA / HGW30CC Blocks | Static Moment > 2.5 kN-m | ₹6,500 – ₹9,500/m |
| Roller Type RG25 Ultra-Rigid | 25 mm Cylindrical Roller | Extreme Rigidity (Line Contact) | Heavy Preload for Hard Metals | RGH25CA Roller Carriage | Elastic Deformation 50% Lower | ₹9,500 – ₹14,000/m |
How to Choose the Right Linear Motion (LM) Guideways: 5-Step Engineering Guide
Step-by-step sizing and technical selection criteria recommended by machine design engineers for optimal cutting speed, rigidity, and lifespan.
Calculate Static and Dynamic Payload Moments
Determine overturning moment loads (pitch, yaw, and roll) created by the machine gantry and cutting head. Size rail width (15mm, 20mm, 25mm, 30mm) to support combined moment loads.
Choose Square Block (HGH) vs Flange Block (HGW)
Square blocks (HGH) mount from the top with narrow footprints for tight slides; flange blocks (HGW) mount from either top or bottom with broad bases for wide gantry uprights.
Select Preload Level (C0 vs C1 vs C2)
C0 (normal clearance) suits smooth woodworking; C1 (light preload) eliminates play for aluminum routers; C2 (medium preload) delivers high rigidity for steel and mold milling.
Decide Ball Guideway vs Cylindrical Roller Guideway
Ball guideways provide low rolling friction for high-speed cutting; roller guideways provide line contact with double the rigidity for heavy vibration-prone milling.
Verify End-Seals and Metal Scraper Protection
Ensure carriage blocks include double-lip end seals, bottom seals, and metal scrapers to block hot cutting chips and fine abrasive dust from entering recirculating tracks.
Air Cooled vs. Water Cooled Linear Motion (LM) Guideways: Technical & Operational Comparison
Evaluate heat rejection methods, acoustic limits, maintenance burdens, and workshop duty cycles before finalizing machine installation.
| Technical Comparison Factor | Air Cooled Configuration | Water / Liquid Cooled Configuration |
|---|---|---|
| Cooling Medium | Convection heat radiation into machine casting through ground base | Not applicable; linear guides operate with friction coefficients under 0.003 |
| Ambient Temperature Handling | Stable operation from -10°C to 80°C with proper grease selection | Thermal expansion matched to machine base casting alloy |
| Operating Noise Level | < 60 dB quiet rolling motion on ball recirculation chains | Negligible acoustic signature during high-speed traverses |
| Duty Cycle Capability | Continuous 24/7 operation with automatic centralized grease lubrication | Rated for 100,000 meters of travel life under design load |
| Maintenance & Plumbing | Replenish lithium grease via grease nipple every 100 km of travel | Monthly visual rail wipe and wiper seal condition check |
| Best Machining Applications | CNC router gantries, laser cutting tables, VMC tool changers, automation | Heavy-duty CNC lathe cross slides, grinding tables, and vertical columns |
Frequently Asked Questions — Linear Motion (LM) Guideways
Answers to real user queries on prices in India, field diagnostics, repair procedures, VFD compatibility, and bearing maintenance.
What is the price of CNC LM guideways and blocks in India?
In India, HGR15 linear rails range from ₹2,800 to ₹4,200 per meter; HGR20 rails range from ₹3,600 to ₹5,400 per meter; HGR25 rails range from ₹4,800 to ₹7,200 per meter; and carriage blocks range from ₹950 to ₹2,400 each.
What is the difference between HGH and HGW linear blocks?
HGH blocks have a narrow, tall square cross-section with threaded holes on top. HGW blocks have a wide horizontal mounting flange with through-holes and threads, allowing mounting from above or beneath.
How do you align and mount dual linear rails parallel on a CNC gantry?
Bolt the master rail firmly against a ground reference shoulder; mount dial indicators to the slave block and sweep along the master rail while tightening slave rail bolts within 0.01 mm parallelism.
What lubrication grease is recommended for LM guideway blocks?
Use lithium-soap NLGI Grade 2 grease for manual grease guns, or ISO VG 68 slideway oil for automatic centralized CNC lubrication networks.
How to repair an LM guideway block that feels rough or sticks?
Clean out dirty grease in solvent, inspect rail raceways for spalling, replace missing or damaged chrome steel recirculating balls using a dummy plastic rail guide, and replace worn rubber end wipers.
What causes linear guide rail pitting and premature flaking?
Premature flaking is caused by lack of lubrication, ingress of abrasive metal dust through worn wipers, excessive mounting bolt torque distorting the rail, or running with severe axis misalignment.
What is the difference between ball guideways and roller guideways?
Ball guideways use spherical balls with point contact for high speed and low friction. Roller guideways use cylindrical rollers with line contact, providing double the rigidity and load capacity for heavy metal milling.
How often should linear guide carriage blocks be greased?
Grease blocks every 100 kilometers of travel or every 1 to 2 months of standard 8-hour production shifts, using 1 to 3 cc of lithium grease per carriage block.
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Why Indian CNC Manufacturers Choose TriQuench
Direct OEM precision engineering, verified ISO 1940 balancing certifications, and pan-India express dispatch.
1,200+ CNC Customers
Trusted by machine builders, furniture plants, and die-makers across India. Fully compatible with standard Biesse, Homag, SCM, Apex Precision, and Jyoti CNC platforms.
ISO & CE Certified
Every spindle is balanced to ISO 1940 Grade G0.4 with sub-3 micron runout accuracy. Manufactured under ISO 9001:2015 certified quality management systems.
24–48h Fast Shipping
Express dispatch from our central facility in Ahmedabad. Shipped in reinforced heavy-duty wooden crates with vacuum barrier packaging for safe transit.