![[THK] — Link Ball (Rod End) RBI](https://prosourcemro.com/wp-content/uploads/2026/05/001-1063-1024x1024.png)
Roller Guides
THK
[THK] — Link Ball (Rod End) RBI
Family ID: THK-RBI
THK RBI type Link Ball (Rod End). Holder: high-strength zinc alloy. Ball stud: S35C with chromate treatment, spherical hardness Hv650+. Boot filled with lithium soap grease No.2. D type: fine thread; BD type: coarse thread. Left-hand thread: suffix L (L engraved on holder). Shaft diameter d2 = 5~16mm. Recommended mating hole tolerance: H10. Spherical clearance: radial ≤0.03mm, axial ≤0.1mm.
11 product codes available in this family
Product Codes & Specifications
| Product Code | Description | Brand | Spec | ||
|---|---|---|---|---|---|
| RBI5D | THK Link Ball RBI5D, d2=5mm, thread=M5×0.8, Da=11.112mm, CS_t=5690N | THK | Shaft Diameter (d2): 5 mm | Total Length (L): 46.0 mm | Holder Diameter (D): 17 mm | Thread: M5×0.8 (Fine thread) | Ball Diameter (Da): 11.112 mm | Allowable Tilt Angle (2θ): ±25° | Tensile Load Capacity (CS): 5690 N | Compressive Load Capacity (CS): 11400 N | Yield Point Strength (Pk): 2840 N | Mass: 25 g | Holder Material: High-strength zinc alloy | Stud Material: S35C with chromate treatment | Lubrication: Lithium grease No.2 (sealed in boot) | Recommended Mating Hole: H10 | Left-hand thread: add L suffix | ||
| RBI6D | THK Link Ball RBI6D, d2=6mm, thread=M6×1, Da=12.7mm, CS_t=7450N | THK | Shaft Diameter (d2): 6 mm | Total Length (L): 55.2 mm | Holder Diameter (D): 20 mm | Thread: M6×1 (Fine thread) | Ball Diameter (Da): 12.7 mm | Allowable Tilt Angle (2θ): ±25° | Tensile Load Capacity (CS): 7450 N | Compressive Load Capacity (CS): 14900 N | Yield Point Strength (Pk): 3730 N | Mass: 40 g | Holder Material: High-strength zinc alloy | Stud Material: S35C with chromate treatment | Lubrication: Lithium grease No.2 (sealed in boot) | Recommended Mating Hole: H10 | Left-hand thread: add L suffix | ||
| RBI8D | THK Link Ball RBI8D, d2=8mm, thread=M8×1.25, Da=15.875mm, CS_t=11700N | THK | Shaft Diameter (d2): 8 mm | Total Length (L): 65.0 mm | Holder Diameter (D): 24 mm | Thread: M8×1.25 (Fine thread) | Ball Diameter (Da): 15.875 mm | Allowable Tilt Angle (2θ): ±25° | Tensile Load Capacity (CS): 11700 N | Compressive Load Capacity (CS): 23200 N | Yield Point Strength (Pk): 5880 N | Mass: 75 g | Holder Material: High-strength zinc alloy | Stud Material: S35C with chromate treatment | Lubrication: Lithium grease No.2 (sealed in boot) | Recommended Mating Hole: H10 | Left-hand thread: add L suffix | ||
| RBI10D | THK Link Ball RBI10D, d2=10mm, thread=M10×1.25, Da=19.05mm, CS_t=16800N | THK | Shaft Diameter (d2): 10 mm | Total Length (L): 74.5 mm | Holder Diameter (D): 28 mm | Thread: M10×1.25 (Fine thread) | Ball Diameter (Da): 19.05 mm | Allowable Tilt Angle (2θ): ±25° | Tensile Load Capacity (CS): 16800 N | Compressive Load Capacity (CS): 33500 N | Yield Point Strength (Pk): 8430 N | Mass: 120 g | Holder Material: High-strength zinc alloy | Stud Material: S35C with chromate treatment | Lubrication: Lithium grease No.2 (sealed in boot) | Recommended Mating Hole: H10 | Left-hand thread: add L suffix | ||
| RBI10BD | THK Link Ball RBI10BD, d2=10mm, thread=M10×1.5, Da=19.05mm, CS_t=16800N | THK | Shaft Diameter (d2): 10 mm | Total Length (L): 80.5 mm | Holder Diameter (D): 28 mm | Thread: M10×1.5 (Coarse thread) | Ball Diameter (Da): 19.05 mm | Allowable Tilt Angle (2θ): ±25° | Tensile Load Capacity (CS): 16800 N | Compressive Load Capacity (CS): 33500 N | Yield Point Strength (Pk): 8430 N | Mass: 123 g | Holder Material: High-strength zinc alloy | Stud Material: S35C with chromate treatment | Lubrication: Lithium grease No.2 (sealed in boot) | Recommended Mating Hole: H10 | Left-hand thread: add L suffix | ||
| RBI12D | THK Link Ball RBI12D, d2=12mm, thread=M12×1.25, Da=22.225mm, CS_t=22800N | THK | Shaft Diameter (d2): 12 mm | Total Length (L): 84.0 mm | Holder Diameter (D): 32 mm | Thread: M12×1.25 (Fine thread) | Ball Diameter (Da): 22.225 mm | Allowable Tilt Angle (2θ): ±25° | Tensile Load Capacity (CS): 22800 N | Compressive Load Capacity (CS): 45600 N | Yield Point Strength (Pk): 11400 N | Mass: 185 g | Holder Material: High-strength zinc alloy | Stud Material: S35C with chromate treatment | Lubrication: Lithium grease No.2 (sealed in boot) | Recommended Mating Hole: H10 | Left-hand thread: add L suffix | ||
| RBI12BD | THK Link Ball RBI12BD, d2=12mm, thread=M12×1.75, Da=22.225mm, CS_t=22800N | THK | Shaft Diameter (d2): 12 mm | Total Length (L): 91.0 mm | Holder Diameter (D): 32 mm | Thread: M12×1.75 (Coarse thread) | Ball Diameter (Da): 22.225 mm | Allowable Tilt Angle (2θ): ±25° | Tensile Load Capacity (CS): 22800 N | Compressive Load Capacity (CS): 45600 N | Yield Point Strength (Pk): 11400 N | Mass: 190 g | Holder Material: High-strength zinc alloy | Stud Material: S35C with chromate treatment | Lubrication: Lithium grease No.2 (sealed in boot) | Recommended Mating Hole: H10 | Left-hand thread: add L suffix | ||
| RBI14D | THK Link Ball RBI14D, d2=14mm, thread=M14×1.5, Da=25.4mm, CS_t=29800N | THK | Shaft Diameter (d2): 14 mm | Total Length (L): 103.0 mm | Holder Diameter (D): 36 mm | Thread: M14×1.5 (Fine thread) | Ball Diameter (Da): 25.4 mm | Allowable Tilt Angle (2θ): ±17° | Tensile Load Capacity (CS): 29800 N | Compressive Load Capacity (CS): 59600 N | Yield Point Strength (Pk): 14900 N | Mass: 275 g | Holder Material: High-strength zinc alloy | Stud Material: S35C with chromate treatment | Lubrication: Lithium grease No.2 (sealed in boot) | Recommended Mating Hole: H10 | Left-hand thread: add L suffix | ||
| RBI14BD | THK Link Ball RBI14BD, d2=14mm, thread=M14×2, Da=25.4mm, CS_t=29800N | THK | Shaft Diameter (d2): 14 mm | Total Length (L): 109.0 mm | Holder Diameter (D): 36 mm | Thread: M14×2 (Coarse thread) | Ball Diameter (Da): 25.4 mm | Allowable Tilt Angle (2θ): ±17° | Tensile Load Capacity (CS): 29800 N | Compressive Load Capacity (CS): 59600 N | Yield Point Strength (Pk): 14900 N | Mass: 280 g | Holder Material: High-strength zinc alloy | Stud Material: S35C with chromate treatment | Lubrication: Lithium grease No.2 (sealed in boot) | Recommended Mating Hole: H10 | Left-hand thread: add L suffix | ||
| RBI16D | THK Link Ball RBI16D, d2=16mm, thread=M16×1.5, Da=25.4mm, CS_t=29800N | THK | Shaft Diameter (d2): 16 mm | Total Length (L): 112.0 mm | Holder Diameter (D): 40 mm | Thread: M16×1.5 (Fine thread) | Ball Diameter (Da): 25.4 mm | Allowable Tilt Angle (2θ): ±17° | Tensile Load Capacity (CS): 29800 N | Compressive Load Capacity (CS): 59600 N | Yield Point Strength (Pk): 14900 N | Mass: 360 g | Holder Material: High-strength zinc alloy | Stud Material: S35C with chromate treatment | Lubrication: Lithium grease No.2 (sealed in boot) | Recommended Mating Hole: H10 | Left-hand thread: add L suffix | ||
| RBI16BD | THK Link Ball RBI16BD, d2=16mm, thread=M16×2, Da=25.4mm, CS_t=29800N | THK | Shaft Diameter (d2): 16 mm | Total Length (L): 118.0 mm | Holder Diameter (D): 40 mm | Thread: M16×2 (Coarse thread) | Ball Diameter (Da): 25.4 mm | Allowable Tilt Angle (2θ): ±17° | Tensile Load Capacity (CS): 29800 N | Compressive Load Capacity (CS): 59600 N | Yield Point Strength (Pk): 14900 N | Mass: 370 g | Holder Material: High-strength zinc alloy | Stud Material: S35C with chromate treatment | Lubrication: Lithium grease No.2 (sealed in boot) | Recommended Mating Hole: H10 | Left-hand thread: add L suffix |
