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When a misaligned or undersized pulley causes rope slippage, premature cable wear, or noisy operation in your rigging or gym setup, the root cause is almost always the wrong groove profile or inadequate bearing support. This U/V/H groove pulley wheel with bearing is engineered for makers, riggers, fitness equipment builders, and mechanical hobbyists who need a reliable, low-friction guide wheel that stays true under load.
Each pulley wheel is machined from either 201 or 304 stainless steel and fitted with a sealed radial bearing at the center bore. The groove profile — U, V, or H — is precision-formed to match specific rope or wire diameters. Outer diameters span 34 mm (~1.34 in) to 90 mm (~3.54 in), with bore and groove dimensions varying by size option (e.g., 34×8×20×10 mm up to 90×17×36×30 mm, expressed as OD×groove width×bore OD×bore ID).
Typical use cases include DIY gym cable pulley systems and cable crossover machines, wire rope redirect sheaves in workshop hoists and rigging rigs, and linear motion guide wheels for CNC router gantries or drawer slide mechanisms where a V-groove wheel tracks along a rail or wire.
U, V, and H groove options in a single product line let you match the pulley to your specific rope, wire, or rail geometry without compromise.
Both grades resist oxidation in humid or outdoor environments. 304 offers enhanced corrosion resistance for marine-adjacent or high-moisture applications.
The pre-installed sealed bearing reduces friction, prevents contamination ingress, and maintains smooth rotation under sustained radial loads.
OD spans 34 mm to 90 mm across 24 size variants, covering compact wire redirects up to larger gym cable sheaves in a single SKU family.
Available in packs of 1, 2, or 5 pieces — order exactly what your build requires without overstocking or sourcing from multiple suppliers.
Dimensioned for standard gym cable machine rebuild kits and workshop rigging setups, with bore IDs sized to accept common axle bolts and shoulder bolts.
| Product Type | Groove Pulley Wheel with Sealed Bearing |
|---|---|
| Groove Profiles | U Type, V Type, H Type |
| Material | 201 Stainless Steel / 304 Stainless Steel (see variant) |
| Outer Diameter (OD) | 34 mm – 90 mm (see variant options) |
| Groove Width | 8 mm – 17 mm (see variant options) |
| Bore Outer Diameter | 16 mm – 38 mm (see variant options) |
| Bore Inner Diameter | 7 mm – 30 mm (see variant options) |
| Bearing Type | Sealed radial bearing (pre-installed) |
| Surface Finish | Brushed / natural stainless |
| Packing Quantity | 1 pc / 2 pcs / 5 pcs (see variant options) |
| Applicable Rope/Wire | See variant options |
| Load Rating | See variant options |
U-groove wheels are designed for round ropes and cables — the curved channel cradles the rope and distributes load evenly. V-groove wheels are intended for V-shaped rails or angled wire, providing positive lateral tracking. H-groove (also called double-flange) wheels suit flat wire or dual-rail configurations where the wheel must straddle a flat guide. Match the groove profile to your rope or rail cross-section for optimal tracking and wear life.
201 stainless steel offers good strength and moderate corrosion resistance, making it suitable for indoor gym equipment, dry workshop environments, and general mechanical applications. 304 stainless steel provides superior resistance to oxidation and chloride exposure, making it the better choice for outdoor rigging, marine-adjacent environments, or any application with regular moisture contact. If in doubt, 304 is the more durable long-term option.
The four dimensions follow the format: OD × Groove Width × Bore Outer Diameter × Bore Inner Diameter, all in millimeters. For example, 48×10×22×16 mm means the wheel has a 48 mm outer diameter, a 10 mm wide groove, a 22 mm outer bearing seat, and a 16 mm inner bore (axle hole). Always verify the bore inner diameter matches your axle or bolt diameter before ordering.
Yes, each pulley wheel ships with the sealed radial bearing already pressed into the bore. The bearing is a standard sealed type and can typically be pressed out and replaced with a standard metric bearing of the same dimensions if it ever wears out. Refer to the bore outer and inner diameter in the variant name to identify the correct replacement bearing size.
Yes. U-groove variants in the 48–90 mm OD range are commonly used in DIY gym cable crossover machine builds and cable pulley system rebuilds. Ensure the groove width matches your cable diameter (typically 5–10 mm for gym cables) and that the bore inner diameter accommodates your chosen axle bolt. The 304 stainless variants are recommended for gym use due to their resistance to sweat and humidity.
The 304 stainless steel variants offer meaningful corrosion resistance for outdoor and semi-marine environments. However, these are general-purpose mechanical pulleys and are not rated as marine-grade certified blocks or sheaves. For light-duty outdoor wire rope redirect or rigging applications in non-saltwater environments, 304 variants perform well. For heavy-duty or saltwater marine use, consult a certified marine hardware supplier.
Single-pulley redirects require 1 piece. A basic cable crossover or compound pulley system typically uses 2–4 wheels. The 5-pack option offers a per-unit cost saving and is ideal if you are building a multi-station gym setup, stocking spares, or running a small production batch. Select your pack size using the "Packing Quantity (Pcs)" option on this page.
