Roller-wheel carriages · V-wheel and C-profile sliders, concentric and eccentric rollers, preload setting, lubricated contact and load per carriage
Not every carriage or slide block on a linear axis is a recirculating-ball runner block. This page covers the roller type: a carriage plate or slider body carrying a set of ball-bearing track rollers that run on a V-edged slide or inside a C-shaped rail. Some rollers are concentric and fix the datum; the rest sit on eccentric pins and are turned to take out clearance or set preload. The rollers, not a ball circuit, carry the load here, so the catalogues quote load per carriage in named directions and assume the roller-to-track contact is kept lubricated.
Roller-wheel carriages and sliders for V-guide slides and C-profile rails: carriage plates with concentric and eccentric V-wheels, steel C-rail sliders, preload setting, wipers and lubricators, and load per carriage. Recirculating-ball runner blocks for profile rails are covered on the Linear guideway carriage block page; the profile rail bar itself on the Linear guide rail bar cut to length page; complete profile rail guides on the Precision linear guide rail page; profile-rail and polymer-slide carriage tables on the Linear motion system page.
Start with your task
01
Hepco machines its GV3 standard carriage plates from aluminium alloy and supplies them clear anodized, either as assembled units factory set to the chosen slide or loose for self-adjustment. The concentric bearings are always on the datum-marked side; eccentric axles provide the adjustment, and removable carriages use double eccentric bearings so the carriage can be taken straight off the slide. [1]
AutomationDirect's SureMotion LV V-carriage carries two concentric and two adjustable eccentric V-wheels with a 70° V groove. The carriages are shipped with the eccentric wheels loose and must be adjusted to design conditions before operation, with a size-specific adjustment tool. [2]
Rollon's Compact Rail sliders run inside a C-profile rail with rollers in alternating contact with both sides of the raceway, and the eccentric rollers set clearance or preload. Factory-assembled systems come in preload class K1 (rollers adjusted free of clearance) or K2, with an interference of 0.03 mm on size 18 rising to 0.06 mm on sizes 43 and 63; for K2 Rollon applies a reduction factor y = 0.1 in its static-load and lifetime checks. [3]
Hepco offers two bearing builds on the same carriage: twin bearings, two individual bearings on a shared axle and the default, for compliance, smoother running and tolerance of misalignment; and a one-piece double-row bearing for higher load capacity, especially radial, with less entrapment of debris. [1]
Ask whether the carriage arrives set to your slide or loose, which side carries the concentric rollers, and what tool and preload class the setting assumes.
02
Hepco's maximum loads for standard carriages assume lubrication at the bearing-to-slide interface, by cap seals, lubricators or bleed lubrication; cap seals are not available on short carriages. With 25 mm bearings the table gives 1,600 N in direction L1 and 3,000 N in L2 for double-row bearings, and 1,280 N and 1,200 N for twin bearings; with 54 mm bearings, 10,000 N in both directions for double-row and 7,200 and 6,400 N for twin. [1]
SureMotion lists static ratings, based on lubricated V-contact surfaces, of 435 N for LVC-20, 800 N for LVC-25 and 2,800 N for LVC-44, with lateral ratings of 685, 1,500 and 4,700 N. It gives a rolling-friction coefficient of 0.02 and extra friction from the wheel-cover wipers of 4, 7 and 15 N for the three sizes, and a speed rating of 8 m/s. [2]
Rollon lists for Compact Rail a maximum radial load of 15,000 N per slider, operating speed up to 9 m/s and acceleration up to 20 m/s² (both depending on the application), and a temperature range of −20 to +120 °C, briefly up to +150 °C. Combining its fixed, compensating and floating rails lets a pair of guides absorb misalignment of up to 3.9 mm axially and 2° radially. [3]
Editorial calculation: an LVC-25 carriage carrying an assumed 500 N with its wheel covers fitted needs about 0.02 × 500 + 7 = 17 N to move, using SureMotion's rolling-friction coefficient and wiper drag. Breakaway and drive losses are not included. [2]
03
| Build | What the catalogue states | Ask about |
|---|---|---|
| Hepco GV3 standard carriage on a double-edge V slide | Anodized aluminium plate; twin or double-row bearings; cap seals or lubricators. [1] | Bearing size; L1 and L2 loads; lubrication. |
| SureMotion LV V-carriage on a double-V track | Aluminium, black anodized; 2 concentric + 2 eccentric wheels; tracks up to 1,256 mm, V surface 58–62 HRC. [2] | Adjustment tool; wheel covers. |
| Rollon Compact Rail slider in a C-profile rail | Zinc-plated steel slider, up to six rollers; rails 160–3,600 mm in 80 mm steps, up to 4,080 mm on request. [3] | T, U or K rail; preload K1 or K2. |
04
Paste it into your enquiry below or into an email to a maker, then replace every bracket.
Guide type: [V slide / double-V track / C-profile rail], size Carriage: [length; plate or slider; mounting holes] Rollers: [twin / double row; shielded / sealed] Setting: [factory set to slide / loose; preload class] Lubrication: [cap seals / lubricators / wipers] Load and speed: [N per carriage, direction; m/s]
Manufacturer profiles associated with Carriage / Slide Block.
Explore company information and manufacturing capabilities, then discuss the scope of your project with a relevant supplier.
Sources checked 2026-10-17. Load tables and adjustment instructions come from three makers: the HepcoMotion GV3 catalogue in Bishop-Wisecarver's US edition, AutomationDirect's SureMotion LV sheet, and Rollon's Compact Rail specification as hosted by Almotion in the Netherlands.
Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.
Compare manufacturer profiles with relevant product and process capability.