Spring clamp E101 TF8 F8-577

dead lengthCNC

Product overview
Erveysa dead-length collets (F Type Collet) are engineered for reproducible clamping position and dimensional stability in CNC and automatic lathe operations. They are suitable for high-speed machining where repeatable part stop and consistent gripping are required.

Material
These F Type collets are manufactured from spring steel with high hardness and are rated for operation up to 290 °C.

Applications

• CNC lathes, automatic lathes, revolver and index machines
• High-speed production and serial machining of small-diameter parts
• Typical sectors: medical, automotive, aerospace

Design notes and usage
Material selection and heat treatment determine performance and service life. Main-spindle collets frequently include an internal groove for improved grip; sub-spindle collets are commonly groove-free to avoid damaging finished parts. For very small diameters main-spindle collets may also be groove-free. For high-wear production runs, carbide inserts can be welded inside the collet (note: carbide may be damaged if the collet is struck). Internal coatings are an option to enhance durability and surface quality.

Revolver lathe collets and F-code mapping
Revolver, index, mechanical automatic and CNC automatic collets are designated by several standards and include references such as A15, A20, A25, 25 INDEX, A30, 36 TRAUB, A42 and A60. Common F-code to DIN/E mappings include:

• F22 (140 E)
• F28 (148 E)
• F32 (161 E)
• F35 (163 E)
• F42 (171 E)
• F48 (173 E)
• F66 (185 E)

Swiss Collet
Swiss-style collets provide precise, repeatable gripping for high-speed automatic lathe operations and help minimize machine wear on small, high-precision components used in medical, automotive and aerospace applications.

F Type Collet
F Type collets are standard dead-length solutions manufactured from hardened materials for reproducible clamping. They are used to improve process stability, reduce setup variation and increase throughput in automatic turning operations.

Specifications (table)
Code | ø d [mm] | ø A [mm] | ø B [mm] | I [mm] | L [mm] | K [degree] | F min. – max. [mm] (circle) | F min. – max. [mm] (square) | F min. – max. [mm] (hexagon)
E101 / TF8 / F8-577 | 8 | 12 | 8 | 4.5 | 42 | 16 | 0.5-5.0 | 1.0-3.5 | 1.0-4.5
E109 / TF10 / F10 | 10 | 16 | 10 | 5.5 | 47.5 | 20 | 0.5-7.0 | 1.0-5.0 | 1.0-6.5
E116 / TF13 / F13 | 13 | 19 | 13 | 6 | 64 | 16 | 0.5-9.5 | 2.0-7.0 | 2.0-8.5
E120 / TF15 / F15 | 15 | 21 | 15 | 6 | 64 | 16 | 0.5-12.0 | 2.0-8.5 | 2.0-10.5
E1212 / TF16 / F16 | 16 | 21 | 16 | 6 | 64 | 16 | 0.5-12.0 | 2.0-8.5 | 2.0-10.5
E127 / TF18 / F18 | 18 | 25 | 18 | 6 | 67 | 16 | 0.5-13.0 | 2.0-9.5 | 2.0-11.5
E136 / F20-201 | 20 | 26 | 19 | 5 | 54 | 15 | 2,5 – 16,5 | 2,0 – 12,0 | 2,0 – 14,5
E138 / TF20 / F20-87 | 20 | 28 | 21 | 7 | 67 | 16 | 2,5 – 16,0 | 2,0 – 11,5 | 2,0 – 14,0
E140 / TF22 / F22 | 22 | 30 | 21 | 6 | 55 | 15 | 2,5 – 16,5 | 2,0 – 12,0 | 2,0 – 14,5
E144 | 25 | 34 | 25 | 6 | 65 | 15 | 2,5 – 20,0 | 2,0 – 14,5 | 2,0 – 17,0
E145 / TF25 / F25 | 25 | 35 | 27 | 10 | 77 | 16 | 2,5 – 20,0 | 2,0 – 14,5 | 2,0 – 17,5
E147 / F27-22 | 27 | 38 | 30 | 8 | 72,7 | 15 | 2,5 – 23,0 | 2,0 – 16,0 | 2,0 – 20,0
E148 / F28 | 28 | 38 | 28 | 7 | 70 | 15 | 2,5 – 23,0 | 2,0 – 16,0 | 2,0 – 20,0
E157 / TF30 / F30 | 30 | 42 | 34 | 10 | 80 | 16 | 2,5 – 25,0 | 2,0 – 18,0 | 2,0 – 22,0
EF30 / E1446 | 30 | 38 | 32 | 6 | 65 | 15 | 2,5 – 26,0 | 2,0 – 18,5 | 2,0 – 22,5
E161 / F32 | 32 | 45 | 34 | 8 | 75 | 15 | 2,5 – 25,5 | 2,0 – 18,0 | 2,0 – 22,5
E162 | 35 | 43 | 34 | 7 | 70 | 15 | 2,5 – 29,5 | 2,0 – 21,0 | 2,0 – 25,5
E163 / F35 | 35 | 48 | 38 | 8 | 80 | 15 | 2,5 – 30,5 | 2,0 – 21,5 | 2,0 – 25,5
EF37 / TF37 / E1536 | 37 | 47 | 40 | 10 | 92 | 16 | 2,5 – 32,0 | 2,0 – 22,5 | 2,0 – 27,0
E164 / F38 | 38 | 49 | 38 | 9.5 | 108 | 15 | 2,5 – 32,0 | 2,0 – 22,5 | 2,0 – 28,0
EF40 | 40 | 47 | 40 | 10 | 92 | 16 | 2,5 – 36,0 | 2,0 – 25,5 | 2,0 – 31,5
E171 / F42 | 42 | 55 | 42 | 9 | 94 | 15 | 2,5 – 37,0 | 4,0 – 26,5 | 4,0 – 32,0
E173 / F48 | 48 | 60 | 50 | 9 | 94 | 15 | 2,5 – 42,0 | 4,0 – 30,0 | 4,0 – 36,5
TF48 | 48 | 60 | 50 | 9 | 94 | 15 | 2,5 – 42,0 | 4,0 – 30,0 | 4,0 – 36,5
E177 / F58 | 58 | 70 | 60 | 9 | 94 | 15 | 3,0 – 52,0 | 4,0 – 37,0 | 4,0 – 45,0
E185 / F66 | 66 | 84 | 73 | 9 | 110 | 15 | 3,0 – 60,0 | 5,0 – 42,5 | 5,0 – 52,0
E190 / F88 | 88 | 106 | 94 | 10 | 115 | 15 | 60,0 – 80,0 | 20,0 – 56,0 | 20,0 – 69,0
E193 / F90 | 90 | 107 | 92 | 12.5 | 130 | 15 | INFO | INFO | INFO

Common product codes and models
Examples: F25, F32, F37, F48, F66, 173E, 1536E, 177E, 185E, 190E, 193E, 171E, 163E, 161E, 145E; TF25, TF32, TF37, TF42, TF48, TF66.

Technical characteristics / Specifications

• Manufacturer: Erveysa
• Product family: Dead-Length / F Type Collets
• Material: Spring steel (hardened)
• Operating temperature: up to 290 °C
• Applications: CNC and automatic lathes, high-speed machining (medical, automotive, aerospace)
• Options: carbide insert welding, internal coatings for increased durability
• Variants: round, square, hexagon clamping ranges as listed