SANTA CLARA -- Kendall Hunter is running and cutting. And he is taking part in individual drills during 49ers organized team activities.
Hunter, a third-year running back, said there is no doubt in his mind he'll be ready to go when training camp opens in late July.
"Absolutely," he told CSNBayArea.com. "I feel like I can do anything and everything. It's whatever the trainers and the coaches want."
Hunter sustained a torn left Achilles tendon on Nov. 25 against the New Orleans Saints and underwent season-ending surgery. Two months later, he was no longer was using the orthopedic boot to restrict his foot's movement. He has been running for more than two months.
"It's going well," Hunter said. "I'm doing everything. I'm just keeping it to whatever the trainers want. I'm listening to what they're saying, and doing whatever they say I can do."
When camp opens July 24, it will be eight months since Hunter's injury. Last week, receiver Michael Crabtree underwent surgery to repair a torn Achilles. His rehabilitation is expected to take six months.
"They're similar, but not going to compare the two injuries," 49ers coach Jim Harbaugh said. "Both in Kendall's and Michael's cases, the doctor was very confident and felt very good about the operations. Kendall's on track."
Hunter sustained his injury on a running play when the back of his foot flexed awkwardly as Saints linebacker Jonathan Vilma dragged him down from behind. Crabtree completely tore his right Achilles when he quickly turned upfield after going in motion during a non-contact 7-on-7 drill.
"It was crazy," said Hunter, who has yet to speak with Crabtree. "It can happen to anybody. When Crab comes back he'll be better than ever."
"Everybody's different, just mentally and also your leg. You have to listen to the trainers because you don't want to push it too fast. You have to abide by their rules."
Hunter is taking part in individual sessions before practices, including taking handoffs, working on footwork and running pass routes.
With two months until the opening of training camp, there is no reason for any of the rehabbing 49ers players to rush back. Hunter and wide receiver Kyle Williams, who sustained a torn left ACL on the same play in which Hunter was injured, also appears to be on pace to be cleared at the opening of training camp.
There are at least 13 players who did not take part in OTAs on Tuesday due to injuries, including running back Frank Gore. He was at the 49ers' practice facility but did not practice due to an undisclosed condition. Gore, who recently turned 30, played in all 37 games, including playoffs, the past two seasons.
"(He is) just working through something," Harbaugh said. "(It's) nothing too serious."
Here's a list of those who are not practicing due to known injuries:
WR Michael Crabtree (Achilles)
WR Kyle Williams (knee)
WR Mario Manningham (knee)
RB Frank Gore (undisclosed)
RB Kendall Hunter (Achilles)
RB Marcus Lattimore (knee)
T Joe Staley (knee)
G Mike Iupati (shoulder)
T Luke Marquardt (foot)
DT Justin Smith (triceps)
DL Tank Carradine (knee)
OLB Aldon Smith (shoulder)
DT Quinton Dial (toe)
OLB Ahmad Brooks (shoulder)
Also, T Anthony Davis and LB NaVorro Bowman (undisclosed), and CB Tarell Brown and C Jonathan Goodwin, both of whom choose not to participate in voluntary workouts, were not in attendance on Tuesday.