Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
When your rack-and-pinion system, CNC router, or automation rig demands consistent tooth engagement and zero slop, the wrong gear ruins the whole build. Hobbyists, engineers, and machine builders who need reliable rotary-to-linear motion conversion will find these 1.5 module spur gears a dependable foundation for their drivetrain.
Each gear is machined from steel with a stepped bore hub design. Tooth counts range from 40T to 80T (1.5M module), with outer diameters spanning approximately 63 mm to 100.5 mm (2.48"–3.96"). Bore sizes range from 8 mm to 25 mm (0.31"–0.98"), with a hub step depth of 45–50 mm and tooth face width of 15 mm (0.59"). Available in single-piece or multi-piece packs.
Typical use cases include rack-and-pinion linear actuators for CNC gantry systems, rotary drive stages in 3D printer Z-axis assemblies, and gear reduction stages in DIY robotics and automation projects requiring 1.5 mod spur gear transmission.
Available in 40T, 45T, 60T, and 65T configurations to match your gear ratio requirements for rack-and-pinion or gear-to-gear drives.
Each gear features a precision-machined stepped hub (step depth 45–50 mm) that simplifies shaft alignment and axial positioning in your assembly.
Machined from steel for durability under load. Suitable for moderate-duty mechanical drives where consistent tooth mesh and wear resistance matter.
Bore options from 8 mm to 25 mm (0.31"–0.98") accommodate a variety of shaft diameters common in DIY CNC, robotics, and automation builds.
Order 1 to 5 pieces per SKU to match your project needs — whether you're prototyping a single axis or building a multi-axis gantry system.
1.5 module tooth profile is compatible with standard 1.5M racks, making these gears a direct fit for linear motion systems in CNC routers and automation rigs.
| Module | 1.5M |
|---|---|
| Tooth Count Options | 40T, 45T, 60T, 65T |
| Outer Diameter (OD) | 63 mm / 70.5 mm / 93 mm / 100.5 mm (see variant options) |
| Bore Diameter | 8 mm / 12 mm / 15 mm / 25 mm (see variant options) |
| Hub Step Depth | 45–50 mm |
| Tooth Face Width | 15 mm (0.59") |
| Material | Steel |
| Finish | See variant options |
| Pack Quantity | 1 / 2 / 3 / 4 / 5 Pcs (see variant options) |
| Weight per Piece | See variant options |
| Compatible Rack Module | 1.5M |
The tooth count determines your gear ratio and output speed. A 40T gear paired with a smaller pinion gives a higher reduction ratio, while a 65T gear provides more torque multiplication. For rack-and-pinion linear drives, tooth count affects linear travel per shaft revolution — calculate using: travel per rev = π × module × tooth count (e.g., 1.5 × 40 × π ≈ 188 mm/rev).
Select a bore diameter that matches your shaft OD. Available bores are 8 mm, 12 mm, 15 mm, and 25 mm. If your shaft is slightly undersized, a setscrew or keyway adapter can be used. Do not select a bore smaller than your shaft diameter.
Yes. These gears are machined to a 1.5M (module 1.5) tooth profile, which is directly compatible with any standard 1.5 module rack. Ensure the rack is also rated for the same module to guarantee proper tooth mesh and avoid premature wear.
These gears are machined from steel, offering solid load-bearing capacity for moderate-duty mechanical drives. They are suitable for CNC routers, robotics, and automation systems operating under typical DIY and light industrial loads. For high-speed or heavy-duty continuous operation, verify load ratings against your application requirements.
The gears are steel construction. For environments with moisture or chemical exposure, we recommend applying a light machine oil or grease to the tooth surfaces and bore. If corrosion resistance is a primary requirement, contact us to confirm finish options available for your selected variant.
Yes. Any two 1.5M spur gears with compatible tooth profiles can mesh together for gear-to-gear power transmission. Ensure center distance is calculated correctly: center distance = (module × (T1 + T2)) / 2. For example, a 40T and 60T pair: center distance = 1.5 × (40 + 60) / 2 = 75 mm.
Multi-piece packs (2–5 Pcs) are ideal for multi-axis builds, keeping spare gears on hand for maintenance, or building symmetric drive systems (e.g., dual-drive gantry). Ordering in packs typically reduces per-unit cost compared to ordering singles separately.
