ROUND JAWS - 1/16" x 90° Serrations
FOR USE ON: SMW Autoblok, Rohm, Pratt Burnerd & Other Chucks
- 1/16" x 90° serrations
- Round Jaws allow for complete gripping of workpiece
- Oversized jaws available
- Ideal for thin-walled or irregular shaped workpieces.
- Can be machined to fit workpiece
- Max. length of serrations: 5.75"
- Special "J" dimensions available
- Available in Aluminum, Cast Iron & Steel
| Critical Dimensions | ALUMINUM | CAST IRON | STEEL | |||||||||
| Group No |
Chuck Size |
Groove Width G |
Screw Size E |
Hole Space D |
Hole to Front J |
Pie Dia B |
Height Inch A |
No. of Holes |
Industry Ref # |
Part Number |
Part Number |
Part Number |
| I1-43-62 | 5 | 0.433 (11mm) | 5/16 | 0.625 (16mm) | 0.875 | 6 | 2.00 | 3 | - | 6-RPH-5256A | - | 6-RPH-5256S |
| I1-43-71 | 5-6 | 0.433 (11mm) | 5/16 | 0.718 (18mm) | 1.150 | 6 | 2.00 | 3 | - | RPH-6200A | RPH-6200CI | RPH-6200S |
| 6 | 3.00 | 3 | - | RPH-6300A | - | - | ||||||
| 6 | 4.00 | 3 | - | RPH-6400A | - | RPH-6400S | ||||||
| I1-47-59 | 5-6 | 0.473 (12mm) | 5/16 | 0.591 (15mm) | 0.900 | 6 | 2.00 | 2 | - | 6-RPH-5200A | - | 6-RPH-5200S |
| I1-55-71 | 5-6 | 0.551 (14mm) | 3/8 | 0.710 (18mm) | 1.050 | 6 | 2.00 | 3 | - | RPH-6205A | RPH-6205CI | RPH-6205S |
| 6 | 4.00 | 3 | - | RPH-6405A | - | RPH-6405S | ||||||
| I1-55-87 | 5-10 | 0.551 (14mm) | 3/8 | 0.875 (22mm) | 1.650 | 8 | 2.00 | 3 | - | 8-RPH-6201A | 8-RPH-6201CI | 8-RPH-6201S |
| 8 | 4.00 | 3 | - | 8-RPH-6401A | - | 8-RPH-6401S | ||||||
| 1.913 | 10 | 2.00 | 3 | - | RPH-10205A | RPH-10205CI | RPH-10205S | |||||
| 10 | 4.00 | 3 | - | RPH-10405A | RPH-10405CI | - | ||||||
| I1-55-98 | 5-6 | 0.551 (14mm) | 3/8 | 0.984 (25mm) | 1.420 | 6 | 2.00 | 2 | - | RSM-6200A | RSM-6200CI | RSM-6200S |
| 6 | 4.00 | 2 | - | RSM-6400A | - | RSM-6400S | ||||||
| I1-66-87 | 8 | 0.669 (17mm) | 1/2 | 0.875 (22mm) | 1.650 | 8 | 2.00 | 3 | - | RPH-8200A | RPH-8200CI | RPH-8200S |
| 8 | 4.00 | 3 | - | RPH-8400A | - | RPH-8400S | ||||||
| I1-66-100 | 8 | 0.669 (17mm) | 1/2 | 1.000 (25.5mm) | 2.250 | 8 | 2.00 | 2 | - | RPH-8201A | RPH-8201CI | RPH-8201S |
| 8 | 4.00 | 2 | - | RPH-8401A | - | RPH-8401S | ||||||
| 10 | 2.00 | 2 | - | 10-RPH-8201A | - | - | ||||||
| 12 | 2.00 | 2 | - | 12-RPH-8201A | - | - | ||||||
| I1-66-112 | 8 | 0.669 (17mm) | 1/2 | 1.125 (28.5mm) | 1.125 | 8 | 2.00 | 3 | SMW8P | RSM-8200A | RSM-8200CI | RSM-8200S |
| 4.00 | 3 | SMW8P1 | RSM-8400A | - | RSM-8400S | |||||||
Round Jaw Material: ALUMINUM-6061-T6 Bar Stock, CAST IRON-Gray, STEEL-1018. 18" & Larger- Aluminum Casting T6
* denotes non-stock item. Please allow 1 week manufacturing time.
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| Critical Dimensions | ALUMINIUM | CAST IRON | STEEL | ||||||||||
| Group No | Chuck Size | Groove Width G | Screw Size E | Hole Space D | Hole to Front J | Middle Hole to Front Jm | Pie Dia B | Height Inch A | No. of Holes | Industry Ref # | Part Number | Part Number | Part Number |
| I1-78-118 | 10 to 12 | 0.787 (20mm) | 1/2 | 1.187 (30mm) | 1.913 | - | 8 | 2.000 | 2 | - | 8-RPH-10200A | - | - |
| 3.100 | 10 | 2.000 | 3 | - | RPH-10200A | RPH-10200CI | RPH-10200S | ||||||
| 2.500 | 3 | - | RPH-10250A | - | - | ||||||||
| 4.000 | 3 | - | RPH-10400A | RPH-10400CI | - | ||||||||
| 18 | 2.500 | 3 | - | 18-RPH-10250A | - | - | |||||||
| 2.900 | 4.087 | 12 | 2.000 | 3 | - | 12-RPH-10200A | 12-RPH-10200CI | - | |||||
| 12 | 2.500 | 3 | - | 12-RPH-10250A | - | - | |||||||
| 12 | 4.000 | 3 | - | 12-RPH-10400A | - | - | |||||||
| 12 | 5.000 | 3 | - | 12-RPH-10500A | - | - | |||||||
| 15 | 2.500 | 3 | - | 15-RPH-10250A | - | - | |||||||
| I1-82-112 | 11 to 12 | 0.827 (21mm) | 5/8 | 1.125 (28.5mm) | 3.630 | - | 12 | 2.000 | 2 | - | RPH-11200A | RPH-11200CI | - |
| - | 12 | 4.000 | 2 | - | RPH-11400A | - | - | ||||||
| I1-82-217 | 10 to 12 | 0.827 (21mm) | 1/2 | 2.170 (55mm) | 1.855 | 4.025 | 10 | 2.000 | 3 | - | 10-RPH-12200A | 10-RPH-12200CI | - |
| 10 | 4.000 | 3 | - | 10-RPH-12400A | - | - | |||||||
| I1-82-117 | 10 to 12 | 0.827 (21mm) | 1/2 | 1.187 (30mm) | 2.875 | - | 12 | 2.500 | 2 | - | RSM-12250A | - | - |
| - | 12 | 4.000 | 2 | - | RSM-12400A | - | - | ||||||
| 2.900 | 4.087 | 12 | 2.000 | 3 | - | RPH-12200A | RPH-12200CI | - | |||||
| 12 | 2.500 | 3 | - | RPH-12250A | - | - | |||||||
| 12 | 4.000 | 3 | - | RPH-12400A | - | - | |||||||
| I1-82-118m | 10 | 0.827 (21mm) | 16mm | 1.181 (30mm) | 1.819 | 3.000 | 10 | 2.000 | 3 | SMW10P | RSM-10200A | - | - |
| 10 | 4.000 | 3 | SMW10P1 | RSM-10400A | - | - | |||||||
| 12 | 2.000 | 3 | SMW12-10P | 12-RSM-10200A | - | - | |||||||
| 15 | 3.000 | 3 | SMW15-10P | 15-RSM-10300A | - | - | |||||||
| 18 | 3.000 | 3 | SMW18-10P | 18-RSM-10300A | - | - | |||||||
| 12 | 0.827 (21mm) | 16mm | 1.181 (30mm) | 2.819 | 4.000 | 12 | 2.000 | 3 | SMW12P | RSM-12201A | - | - | |
| 4.000 | 3 | SMW12P1 | RSM-12401A | - | - | ||||||||
| I1-82-118 | 8 to 12 | 0.827 (21mm) | 5/8 | 1.187 (30mm) | 1.963 | - | 8 | 2.000 | 2 | - | RPH-8205A | RPH-8205CI | RPH-8205S |
| 4.000 | 2 | - | RPH-8405A | - | RPH-8405S | ||||||||
| 2.875 | - | 12 | 2.000 | 2 | - | RAT-12200A | RAT-12200CI | - | |||||
| 2.500 | 2 | - | RAT-12250A | - | - | ||||||||
| 4.000 | 2 | - | RAT-12400A | - | - | ||||||||
| I1-82-156 | 14 to 18 | 0.827 (21mm) | 5/8 | 1.562 (39.5mm) | 2.875 | 4.437 | 15 | 2.500 | 3 | - | RPH-15250A | RPH-15250CI | - |
| 3.438 | 5.000 | 15 | 3.000 | 3 | PH15P | RPH-15300A4 | - | - | |||||
| 2.875 | 4.437 | 15 | 4.000 | 3 | - | RPH-15400A | - | - | |||||
| 3.438 | 5.000 | 15 | 4.000 | 3 | PH15P1 | RPH-15400A4 | - | - | |||||
| 2.875 | 4.437 | 18 | 2.500 | 3 | - | 18-RPH-15250A | - | - | |||||
| 3.438 | 5.000 | 18 | 3.000 | 3 | PH18-15P | 18-RPH-15300A4 | - | - | |||||
| 4.000 | 3 | PH18-15P1 | 18-RPH-15400A4 | - | - | ||||||||
| 2.875 | 4.437 | 18 | 2.500 | 3 | - | RPH-18250A | - | - | |||||
| 4.000 | 3 | - | RPH-18400A | - | - | ||||||||
| 3.438 | 5.000 | 21 | 3.000 | 3 | PH21-15P | 21-RPH-15300A4 | - | - | |||||
| 2.875 | 4.437 | 24 | 2.500 | 3 | - | 24-RPH-18250A | - | - | |||||
| 3.438 | 5.000 | 24 | 3.000 | 3 | PH24-15P | 24-RPH-15300A4 | - | - | |||||
| 2.875 | 4.437 | 24 | 4.000 | 3 | - | 24-RPH-18400A | - | - | |||||
| I1-100-137 | 14 to 15 | 1.003 (25.5mm) | 3/4 | 1.375 (35mm) | 3.500 | 4.875 | 15 | 2.000 | 3 | - | RPH-15210A | - | - |
| 4.000 | 3 | - | RPH-15410A | - | - | ||||||||
| I1-118-197 | 18 | 1.181 (30mm) | 3/4 | 1.970 (50mm) | 4.060 | 6.030 | 18 | 3.000 | 3 | - | RPH-18300A | - | - |
| 4.000 | 3 | - | RPH-18400A | - | - | ||||||||
Round Jaw Material: ALUMINUM-6061-T6 Bar Stock, CAST IRON-Gray, STEEL-1018. 18" & Larger- Aluminum Casting T6
* denotes non-stock item. Please allow 1 week manufacturing time.