![[THK] — Change Nut DCMA (Flange, 45° Lead Angle)](https://prosourcemro.com/wp-content/uploads/2026/05/001-1044-1024x768.png)
Ball Screws
THK
[THK] — Change Nut DCMA (Flange, 45° Lead Angle)
Family ID: THK-DCMA
THK DCMA Change Nut, flange type with 45° lead angle. Difficult to achieve by conventional machining. Improved wear resistance, enhanced mechanical properties, and simplified shaft-end support. 9 sizes DCMA15T~DCMA50. DCMA40/45/50: order basis only (sold as set with CT shaft). Compatible with CT series multi-start screw shafts.
9 product codes available in this family
Product Codes & Specifications
| Product Code | Description | Brand | Spec | ||
|---|---|---|---|---|---|
| DCMA15T | THK Change Nut DCMA15T, D=22mm, L=15mm, 45° lead | THK | Outer Diameter (D): 22 mm (0/-0.052) | Nut Length (L): 15 mm | Flange Diameter (D1): 44 mm | Flange Height (H): 6 mm | Bolt Hole Diameter (B): 5.4 mm | Bolt PCD: 31 mm | Lead Angle: 45° | Mounting Type: Flange (3-bolt) | Compatible Shaft: CT15T | Availability: Standard stock | ||
| DCMA17T | THK Change Nut DCMA17T, D=28mm, L=15mm, 45° lead | THK | Outer Diameter (D): 28 mm (0/-0.052) | Nut Length (L): 15 mm | Flange Diameter (D1): 51 mm | Flange Height (H): 7 mm | Bolt Hole Diameter (B): 6.6 mm | Bolt PCD: 38 mm | Lead Angle: 45° | Mounting Type: Flange (3-bolt) | Compatible Shaft: CT17T | Availability: Standard stock | ||
| DCMA20T | THK Change Nut DCMA20T, D=32mm, L=20mm, 45° lead | THK | Outer Diameter (D): 32 mm (0/-0.062) | Nut Length (L): 20 mm | Flange Diameter (D1): 56 mm | Flange Height (H): 7 mm | Bolt Hole Diameter (B): 6.6 mm | Bolt PCD: 42 mm | Lead Angle: 45° | Mounting Type: Flange (3-bolt) | Compatible Shaft: CT20T | Availability: Standard stock | ||
| DCMA25T | THK Change Nut DCMA25T, D=36mm, L=25mm, 45° lead | THK | Outer Diameter (D): 36 mm (0/-0.062) | Nut Length (L): 25 mm | Flange Diameter (D1): 61 mm | Flange Height (H): 8 mm | Bolt Hole Diameter (B): 6.6 mm | Bolt PCD: 47 mm | Lead Angle: 45° | Mounting Type: Flange (3-bolt) | Compatible Shaft: CT25T | Availability: Standard stock | ||
| DCMA30T | THK Change Nut DCMA30T, D=44mm, L=28mm, 45° lead | THK | Outer Diameter (D): 44 mm (0/-0.062) | Nut Length (L): 28 mm | Flange Diameter (D1): 76 mm | Flange Height (H): 10 mm | Bolt Hole Diameter (B): 9.0 mm | Bolt PCD: 58 mm | Lead Angle: 45° | Mounting Type: Flange (3-bolt) | Compatible Shaft: CT30T | Availability: Standard stock | ||
| DCMA35T | THK Change Nut DCMA35T, D=52mm, L=30mm, 45° lead | THK | Outer Diameter (D): 52 mm (0/-0.074) | Nut Length (L): 30 mm | Flange Diameter (D1): 84 mm | Flange Height (H): 10 mm | Bolt Hole Diameter (B): 9.0 mm | Bolt PCD: 66 mm | Lead Angle: 45° | Mounting Type: Flange (3-bolt) | Compatible Shaft: CT35T | Availability: Standard stock | ||
| DCMA40 | THK Change Nut DCMA40, D=58mm, L=35mm, 45° lead | THK | Outer Diameter (D): 58 mm (0/-0.074) | Nut Length (L): 35 mm | Flange Diameter (D1): 98 mm | Flange Height (H): 12 mm | Bolt Hole Diameter (B): 11.0 mm | Bolt PCD: 76 mm | Lead Angle: 45° | Mounting Type: Flange (3-bolt) | Compatible Shaft: CT40 | Availability: Order basis only; sold as set with CT shaft | ||
| DCMA45 | THK Change Nut DCMA45, D=64mm, L=37mm, 45° lead | THK | Outer Diameter (D): 64 mm (0/-0.074) | Nut Length (L): 37 mm | Flange Diameter (D1): 104 mm | Flange Height (H): 12 mm | Bolt Hole Diameter (B): 11.0 mm | Bolt PCD: 80 mm | Lead Angle: 45° | Mounting Type: Flange (3-bolt) | Compatible Shaft: CT45 | Availability: Order basis only; sold as set with CT shaft | ||
| DCMA50 | THK Change Nut DCMA50, D=68mm, L=40mm, 45° lead | THK | Outer Diameter (D): 68 mm (0/-0.074) | Nut Length (L): 40 mm | Flange Diameter (D1): 109 mm | Flange Height (H): 12 mm | Bolt Hole Diameter (B): 11.0 mm | Bolt PCD: 85 mm | Lead Angle: 45° | Mounting Type: Flange (3-bolt) | Compatible Shaft: CT50 | Availability: Order basis only; sold as set with CT shaft |
